diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index bced9c4933..9d0ffb29de 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -169,8 +169,9 @@ jobs:
       shell: bash
 
   check-msrv:
-    # Run `cargo check` on our minimum supported Rust version (1.49.0).
-    name: "cargo check (MSRV on ubuntu-latest)"
+    # Run `cargo check` on our minimum supported Rust version (1.56.0). This
+    # checks with minimal versions; maximal versions are checked above.
+    name: "cargo check (+MSRV -Zminimal-versions)"
     needs: check
     runs-on: ubuntu-latest
     strategy:
@@ -190,20 +191,8 @@ jobs:
         - tracing-tower
         - tracing
         toolchain:
-        - 1.49.0
+        - 1.56.0
         - stable
-        # TODO(eliza): remove this when appender is on the same MSRV.
-        #              same for tracing subscriber
-        exclude:
-        - subcrate: tracing-appender
-          toolchain: 1.49.0
-        - subcrate: tracing-subscriber
-          toolchain: 1.49.0
-        include:
-        - subcrate: tracing-appender
-          toolchain: 1.53.0
-        - subcrate: tracing-subscriber
-          toolchain: 1.50.0
     steps:
     - uses: actions/checkout@v3
     - name: "install Rust ${{ env.APPENDER_MSRV }}"
diff --git a/README.md b/README.md
index 2bc566ed6e..cfe1be8a19 100644
--- a/README.md
+++ b/README.md
@@ -252,14 +252,14 @@ attachment that `Future::instrument` does.
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.49. The current Tracing version is not guaranteed to build on Rust
+version is 1.56. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
 project. The current stable Rust compiler and the three most recent minor
 versions before it will always be supported. For example, if the current stable
-compiler version is 1.45, the minimum supported version will not be increased
-past 1.42, three minor versions prior. Increasing the minimum supported compiler
+compiler version is 1.69, the minimum supported version will not be increased
+past 1.66, three minor versions prior. Increasing the minimum supported compiler
 version is not considered a semver breaking change as long as doing so complies
 with this policy.
 
diff --git a/examples/Cargo.toml b/examples/Cargo.toml
index 510a0680b8..25e56247bb 100644
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@@ -3,7 +3,7 @@ name = "tracing-examples"
 version = "0.0.0"
 publish = false
 edition = "2018"
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 
 [features]
 default = []
diff --git a/tracing-appender/README.md b/tracing-appender/README.md
index 533397b31c..4eaa1ab91b 100644
--- a/tracing-appender/README.md
+++ b/tracing-appender/README.md
@@ -152,8 +152,8 @@ Rust versions earlier than the minimum supported version.
 Tracing follows the same compiler support policies as the rest of the Tokio
 project. The current stable Rust compiler and the three most recent minor
 versions before it will always be supported. For example, if the current
-stable compiler version is 1.45, the minimum supported version will not be
-increased past 1.42, three minor versions prior. Increasing the minimum
+stable compiler version is 1.69, the minimum supported version will not be
+increased past 1.66, three minor versions prior. Increasing the minimum
 supported compiler version is not considered a semver breaking change as
 long as doing so complies with this policy.
 
diff --git a/tracing-appender/src/lib.rs b/tracing-appender/src/lib.rs
index afd5160dbb..25279fb0ec 100644
--- a/tracing-appender/src/lib.rs
+++ b/tracing-appender/src/lib.rs
@@ -116,8 +116,8 @@
 //! Tracing follows the same compiler support policies as the rest of the Tokio
 //! project. The current stable Rust compiler and the three most recent minor
 //! versions before it will always be supported. For example, if the current
-//! stable compiler version is 1.45, the minimum supported version will not be
-//! increased past 1.42, three minor versions prior. Increasing the minimum
+//! stable compiler version is 1.69, the minimum supported version will not be
+//! increased past 1.66, three minor versions prior. Increasing the minimum
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
diff --git a/tracing-attributes/Cargo.toml b/tracing-attributes/Cargo.toml
index 8e41eb31d0..199fdda8c9 100644
--- a/tracing-attributes/Cargo.toml
+++ b/tracing-attributes/Cargo.toml
@@ -28,7 +28,7 @@ keywords = ["logging", "tracing", "macro", "instrument", "log"]
 license = "MIT"
 readme = "README.md"
 edition = "2018"
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 
 [lib]
 proc-macro = true
diff --git a/tracing-attributes/README.md b/tracing-attributes/README.md
index 356b511f2a..a3ae1f4e34 100644
--- a/tracing-attributes/README.md
+++ b/tracing-attributes/README.md
@@ -37,7 +37,7 @@ structured, event-based diagnostic information. This crate provides the
 
 Note that this macro is also re-exported by the main `tracing` crate.
 
-*Compiler support: [requires `rustc` 1.49+][msrv]*
+*Compiler support: [requires `rustc` 1.56+][msrv]*
 
 [msrv]: #supported-rust-versions
 
@@ -69,14 +69,14 @@ pub fn my_function(my_arg: usize) {
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.49. The current Tracing version is not guaranteed to build on Rust
+version is 1.56. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
 project. The current stable Rust compiler and the three most recent minor
 versions before it will always be supported. For example, if the current stable
-compiler version is 1.45, the minimum supported version will not be increased
-past 1.42, three minor versions prior. Increasing the minimum supported compiler
+compiler version is 1.69, the minimum supported version will not be increased
+past 1.66, three minor versions prior. Increasing the minimum supported compiler
 version is not considered a semver breaking change as long as doing so complies
 with this policy.
 
diff --git a/tracing-attributes/src/lib.rs b/tracing-attributes/src/lib.rs
index b97b4fd754..9cb1e08147 100644
--- a/tracing-attributes/src/lib.rs
+++ b/tracing-attributes/src/lib.rs
@@ -6,7 +6,7 @@
 //!
 //! Note that this macro is also re-exported by the main `tracing` crate.
 //!
-//! *Compiler support: [requires `rustc` 1.49+][msrv]*
+//! *Compiler support: [requires `rustc` 1.56+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -41,14 +41,14 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.49. The current Tracing version is not guaranteed to build on
+//! version is 1.56. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
 //! project. The current stable Rust compiler and the three most recent minor
 //! versions before it will always be supported. For example, if the current
-//! stable compiler version is 1.45, the minimum supported version will not be
-//! increased past 1.42, three minor versions prior. Increasing the minimum
+//! stable compiler version is 1.69, the minimum supported version will not be
+//! increased past 1.66, three minor versions prior. Increasing the minimum
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
diff --git a/tracing-core/Cargo.toml b/tracing-core/Cargo.toml
index aacd334ae5..319203a87c 100644
--- a/tracing-core/Cargo.toml
+++ b/tracing-core/Cargo.toml
@@ -24,7 +24,7 @@ categories = [
 ]
 keywords = ["logging", "tracing", "profiling"]
 edition = "2018"
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 
 [features]
 default = ["std", "valuable/std"]
diff --git a/tracing-core/README.md b/tracing-core/README.md
index f06c760593..1ef78506fe 100644
--- a/tracing-core/README.md
+++ b/tracing-core/README.md
@@ -53,7 +53,7 @@ The crate provides:
 In addition, it defines the global callsite registry and per-thread current
 dispatcher which other components of the tracing system rely on.
 
-*Compiler support: [requires `rustc` 1.49+][msrv]*
+*Compiler support: [requires `rustc` 1.56+][msrv]*
 
 [msrv]: #supported-rust-versions
 
@@ -99,14 +99,14 @@ The following crate feature flags are available:
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.49. The current Tracing version is not guaranteed to build on Rust
+version is 1.56. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
 project. The current stable Rust compiler and the three most recent minor
 versions before it will always be supported. For example, if the current stable
-compiler version is 1.45, the minimum supported version will not be increased
-past 1.42, three minor versions prior. Increasing the minimum supported compiler
+compiler version is 1.69, the minimum supported version will not be increased
+past 1.69, three minor versions prior. Increasing the minimum supported compiler
 version is not considered a semver breaking change as long as doing so complies
 with this policy.
 
diff --git a/tracing-core/src/lib.rs b/tracing-core/src/lib.rs
index e4767babc1..f5de4eeba9 100644
--- a/tracing-core/src/lib.rs
+++ b/tracing-core/src/lib.rs
@@ -23,7 +23,7 @@
 //! In addition, it defines the global callsite registry and per-thread current
 //! dispatcher which other components of the tracing system rely on.
 //!
-//! *Compiler support: [requires `rustc` 1.49+][msrv]*
+//! *Compiler support: [requires `rustc` 1.56+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -92,14 +92,14 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.49. The current Tracing version is not guaranteed to build on
+//! version is 1.56. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
 //! project. The current stable Rust compiler and the three most recent minor
 //! versions before it will always be supported. For example, if the current
-//! stable compiler version is 1.45, the minimum supported version will not be
-//! increased past 1.42, three minor versions prior. Increasing the minimum
+//! stable compiler version is 1.69, the minimum supported version will not be
+//! increased past 1.66, three minor versions prior. Increasing the minimum
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
diff --git a/tracing-error/Cargo.toml b/tracing-error/Cargo.toml
index d3c66713b7..fb09c64eb6 100644
--- a/tracing-error/Cargo.toml
+++ b/tracing-error/Cargo.toml
@@ -32,7 +32,7 @@ keywords = [
     "backtrace"
 ]
 edition = "2018"
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 
 [features]
 default = ["traced-error"]
diff --git a/tracing-error/README.md b/tracing-error/README.md
index 9d9198df7a..11427aca6a 100644
--- a/tracing-error/README.md
+++ b/tracing-error/README.md
@@ -48,7 +48,7 @@ The crate provides the following:
 
 **Note**: This crate is currently experimental.
 
-*Compiler support: [requires `rustc` 1.49+][msrv]*
+*Compiler support: [requires `rustc` 1.56+][msrv]*
 
 [msrv]: #supported-rust-versions
 
@@ -186,14 +186,14 @@ fn main() {
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.49. The current Tracing version is not guaranteed to build on Rust
+version is 1.56. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
 project. The current stable Rust compiler and the three most recent minor
 versions before it will always be supported. For example, if the current stable
-compiler version is 1.45, the minimum supported version will not be increased
-past 1.42, three minor versions prior. Increasing the minimum supported compiler
+compiler version is 1.69, the minimum supported version will not be increased
+past 1.66, three minor versions prior. Increasing the minimum supported compiler
 version is not considered a semver breaking change as long as doing so complies
 with this policy.
 
diff --git a/tracing-error/src/lib.rs b/tracing-error/src/lib.rs
index 39bf5e1eee..55a04d9026 100644
--- a/tracing-error/src/lib.rs
+++ b/tracing-error/src/lib.rs
@@ -18,7 +18,7 @@
 //!
 //! **Note**: This crate is currently experimental.
 //!
-//! *Compiler support: [requires `rustc` 1.49+][msrv]*
+//! *Compiler support: [requires `rustc` 1.56+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -167,14 +167,14 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.49. The current Tracing version is not guaranteed to build on
+//! version is 1.56. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
 //! project. The current stable Rust compiler and the three most recent minor
 //! versions before it will always be supported. For example, if the current
-//! stable compiler version is 1.45, the minimum supported version will not be
-//! increased past 1.42, three minor versions prior. Increasing the minimum
+//! stable compiler version is 1.69, the minimum supported version will not be
+//! increased past 1.66, three minor versions prior. Increasing the minimum
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
diff --git a/tracing-flame/Cargo.toml b/tracing-flame/Cargo.toml
index d69ea7afb1..2153a0b787 100644
--- a/tracing-flame/Cargo.toml
+++ b/tracing-flame/Cargo.toml
@@ -19,7 +19,7 @@ categories = [
     "asynchronous",
 ]
 keywords = ["tracing", "subscriber", "flamegraph", "profiling"]
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 
 [features]
 default = ["smallvec"]
diff --git a/tracing-flame/README.md b/tracing-flame/README.md
index 2076b45f08..d1bcd267ed 100644
--- a/tracing-flame/README.md
+++ b/tracing-flame/README.md
@@ -26,7 +26,7 @@ flamegraph/flamechart. Flamegraphs/flamecharts are useful for identifying perfor
 bottlenecks in an application. For more details, see Brendan Gregg's [post]
 on flamegraphs.
 
-*Compiler support: [requires `rustc` 1.49+][msrv]*
+*Compiler support: [requires `rustc` 1.56+][msrv]*
 
 [msrv]: #supported-rust-versions
 [post]: http://www.brendangregg.com/flamegraphs.html
@@ -106,14 +106,14 @@ _flamechart_, which _does not_ sort or collapse identical stack frames.
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.49. The current Tracing version is not guaranteed to build on Rust
+version is 1.56. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
 project. The current stable Rust compiler and the three most recent minor
 versions before it will always be supported. For example, if the current stable
-compiler version is 1.45, the minimum supported version will not be increased
-past 1.42, three minor versions prior. Increasing the minimum supported compiler
+compiler version is 1.69, the minimum supported version will not be increased
+past 1.66, three minor versions prior. Increasing the minimum supported compiler
 version is not considered a semver breaking change as long as doing so complies
 with this policy.
 
diff --git a/tracing-flame/src/lib.rs b/tracing-flame/src/lib.rs
index 145d2be90f..5805850555 100644
--- a/tracing-flame/src/lib.rs
+++ b/tracing-flame/src/lib.rs
@@ -10,7 +10,7 @@
 //! issues bottlenecks in an application. For more details, see Brendan Gregg's [post]
 //! on flamegraphs.
 //!
-//! *Compiler support: [requires `rustc` 1.49+][msrv]*
+//! *Compiler support: [requires `rustc` 1.56+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //! [post]: http://www.brendangregg.com/flamegraphs.html
@@ -95,14 +95,14 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.49. The current Tracing version is not guaranteed to build on
+//! version is 1.56. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
 //! project. The current stable Rust compiler and the three most recent minor
 //! versions before it will always be supported. For example, if the current
-//! stable compiler version is 1.45, the minimum supported version will not be
-//! increased past 1.42, three minor versions prior. Increasing the minimum
+//! stable compiler version is 1.69, the minimum supported version will not be
+//! increased past 1.66, three minor versions prior. Increasing the minimum
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
diff --git a/tracing-futures/Cargo.toml b/tracing-futures/Cargo.toml
index ba00ec5c12..a34b459b1e 100644
--- a/tracing-futures/Cargo.toml
+++ b/tracing-futures/Cargo.toml
@@ -16,7 +16,7 @@ categories = [
 ]
 keywords = ["logging", "profiling", "tracing", "futures", "async"]
 license = "MIT"
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 
 [features]
 default = ["std-future", "std"]
diff --git a/tracing-futures/README.md b/tracing-futures/README.md
index e2d6b15156..e2f0da6bd8 100644
--- a/tracing-futures/README.md
+++ b/tracing-futures/README.md
@@ -51,21 +51,21 @@ The crate provides the following traits:
 [`Subscriber`]: https://docs.rs/tracing/latest/tracing/subscriber/index.html
 [`tracing`]: https://crates.io/crates/tracing
 
-*Compiler support: [requires `rustc` 1.49+][msrv]*
+*Compiler support: [requires `rustc` 1.56+][msrv]*
 
 [msrv]: #supported-rust-versions
 
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.49. The current Tracing version is not guaranteed to build on Rust
+version is 1.56. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
 project. The current stable Rust compiler and the three most recent minor
 versions before it will always be supported. For example, if the current stable
-compiler version is 1.45, the minimum supported version will not be increased
-past 1.42, three minor versions prior. Increasing the minimum supported compiler
+compiler version is 1.69, the minimum supported version will not be increased
+past 1.66, three minor versions prior. Increasing the minimum supported compiler
 version is not considered a semver breaking change as long as doing so complies
 with this policy.
 
diff --git a/tracing-futures/src/lib.rs b/tracing-futures/src/lib.rs
index f38d2f9ca5..addf19f159 100644
--- a/tracing-futures/src/lib.rs
+++ b/tracing-futures/src/lib.rs
@@ -15,7 +15,7 @@
 //! * [`WithSubscriber`] allows a `tracing` [`Subscriber`] to be attached to a
 //!   future, sink, stream, or executor.
 //!
-//! *Compiler support: [requires `rustc` 1.49+][msrv]*
+//! *Compiler support: [requires `rustc` 1.56+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -59,14 +59,14 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.49. The current Tracing version is not guaranteed to build on
+//! version is 1.56. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
 //! project. The current stable Rust compiler and the three most recent minor
 //! versions before it will always be supported. For example, if the current
-//! stable compiler version is 1.45, the minimum supported version will not be
-//! increased past 1.42, three minor versions prior. Increasing the minimum
+//! stable compiler version is 1.69, the minimum supported version will not be
+//! increased past 1.66, three minor versions prior. Increasing the minimum
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
diff --git a/tracing-journald/Cargo.toml b/tracing-journald/Cargo.toml
index 790fec4959..f6944f1ca7 100644
--- a/tracing-journald/Cargo.toml
+++ b/tracing-journald/Cargo.toml
@@ -13,7 +13,7 @@ categories = [
     "development-tools::profiling",
 ]
 keywords = ["tracing", "journald"]
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 
 [dependencies]
 libc = "0.2.126"
diff --git a/tracing-journald/README.md b/tracing-journald/README.md
index a9cae89196..58211c7d41 100644
--- a/tracing-journald/README.md
+++ b/tracing-journald/README.md
@@ -27,8 +27,8 @@ scoped, structured, and async-aware diagnostics. `tracing-journald` provides a
 [`tracing-subscriber::Layer`][layer] implementation for logging `tracing` spans
 and events to [`systemd-journald`][journald], on Linux distributions that use
 `systemd`.
-
-*Compiler support: [requires `rustc` 1.49+][msrv]*
+ 
+*Compiler support: [requires `rustc` 1.56+][msrv]*
 
 [msrv]: #supported-rust-versions
 [`tracing`]: https://crates.io/crates/tracing
@@ -38,14 +38,14 @@ and events to [`systemd-journald`][journald], on Linux distributions that use
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.49. The current Tracing version is not guaranteed to build on Rust
+version is 1.56. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
 project. The current stable Rust compiler and the three most recent minor
 versions before it will always be supported. For example, if the current stable
-compiler version is 1.45, the minimum supported version will not be increased
-past 1.42, three minor versions prior. Increasing the minimum supported compiler
+compiler version is 1.69, the minimum supported version will not be increased
+past 1.66, three minor versions prior. Increasing the minimum supported compiler
 version is not considered a semver breaking change as long as doing so complies
 with this policy.
 
diff --git a/tracing-journald/src/lib.rs b/tracing-journald/src/lib.rs
index c91fbddd19..ac816058ca 100644
--- a/tracing-journald/src/lib.rs
+++ b/tracing-journald/src/lib.rs
@@ -11,7 +11,7 @@
 //! and events to [`systemd-journald`][journald], on Linux distributions that
 //! use `systemd`.
 //!
-//! *Compiler support: [requires `rustc` 1.49+][msrv]*
+//! *Compiler support: [requires `rustc` 1.56+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //! [`tracing`]: https://crates.io/crates/tracing
@@ -20,14 +20,14 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.49. The current Tracing version is not guaranteed to build on
+//! version is 1.56. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
 //! project. The current stable Rust compiler and the three most recent minor
 //! versions before it will always be supported. For example, if the current
-//! stable compiler version is 1.45, the minimum supported version will not be
-//! increased past 1.42, three minor versions prior. Increasing the minimum
+//! stable compiler version is 1.69, the minimum supported version will not be
+//! increased past 1.66, three minor versions prior. Increasing the minimum
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
diff --git a/tracing-log/Cargo.toml b/tracing-log/Cargo.toml
index b295da9646..ec10a1d1fb 100644
--- a/tracing-log/Cargo.toml
+++ b/tracing-log/Cargo.toml
@@ -15,7 +15,7 @@ categories = [
 keywords = ["logging", "tracing", "log"]
 license = "MIT"
 readme = "README.md"
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 
 [features]
 default = ["log-tracer", "trace-logger", "std"]
diff --git a/tracing-log/README.md b/tracing-log/README.md
index 1cfee3681d..3da5f6b7e1 100644
--- a/tracing-log/README.md
+++ b/tracing-log/README.md
@@ -56,21 +56,21 @@ This crate provides:
 [`tracing::Subscriber`]: https://docs.rs/tracing/latest/tracing/trait.Subscriber.html
 [`tracing::Event`]: https://docs.rs/tracing/latest/tracing/struct.Event.html
 
-*Compiler support: [requires `rustc` 1.49+][msrv]*
+*Compiler support: [requires `rustc` 1.56+][msrv]*
 
 [msrv]: #supported-rust-versions
 
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.49. The current Tracing version is not guaranteed to build on Rust
+version is 1.56. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
 project. The current stable Rust compiler and the three most recent minor
 versions before it will always be supported. For example, if the current stable
-compiler version is 1.45, the minimum supported version will not be increased
-past 1.42, three minor versions prior. Increasing the minimum supported compiler
+compiler version is 1.69, the minimum supported version will not be increased
+past 1.66, three minor versions prior. Increasing the minimum supported compiler
 version is not considered a semver breaking change as long as doing so complies
 with this policy.
 
diff --git a/tracing-log/src/lib.rs b/tracing-log/src/lib.rs
index 75a5397d7e..768d4f6922 100644
--- a/tracing-log/src/lib.rs
+++ b/tracing-log/src/lib.rs
@@ -16,7 +16,7 @@
 //! - An [`env_logger`] module, with helpers for using the [`env_logger` crate]
 //!   with `tracing` (optional, enabled by the `env-logger` feature).
 //!
-//! *Compiler support: [requires `rustc` 1.49+][msrv]*
+//! *Compiler support: [requires `rustc` 1.56+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -80,14 +80,14 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.49. The current Tracing version is not guaranteed to build on
+//! version is 1.56. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
 //! project. The current stable Rust compiler and the three most recent minor
 //! versions before it will always be supported. For example, if the current
-//! stable compiler version is 1.45, the minimum supported version will not be
-//! increased past 1.42, three minor versions prior. Increasing the minimum
+//! stable compiler version is 1.69, the minimum supported version will not be
+//! increased past 1.66, three minor versions prior. Increasing the minimum
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
diff --git a/tracing-macros/Cargo.toml b/tracing-macros/Cargo.toml
index 8680720b88..9f578ef5a0 100644
--- a/tracing-macros/Cargo.toml
+++ b/tracing-macros/Cargo.toml
@@ -15,7 +15,7 @@ categories = [
 ]
 keywords = ["logging", "tracing"]
 license = "MIT"
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 
 [dependencies]
 tracing = "0.1.35"
diff --git a/tracing-mock/Cargo.toml b/tracing-mock/Cargo.toml
index 02aabbfeaa..29764832a0 100644
--- a/tracing-mock/Cargo.toml
+++ b/tracing-mock/Cargo.toml
@@ -14,7 +14,7 @@ readme = "README.md"
 repository = "https://github.com/tokio-rs/tracing"
 homepage = "https://tokio.rs"
 edition = "2018"
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 publish = false
 
 [dependencies]
diff --git a/tracing-serde/Cargo.toml b/tracing-serde/Cargo.toml
index b3b0f940b8..e9670906bb 100644
--- a/tracing-serde/Cargo.toml
+++ b/tracing-serde/Cargo.toml
@@ -16,7 +16,7 @@ categories = [
     "encoding",
 ]
 keywords = ["logging", "tracing", "serialization"]
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 
 [features]
 valuable = ["valuable_crate", "valuable-serde", "tracing-core/valuable"]
diff --git a/tracing-serde/README.md b/tracing-serde/README.md
index 7a41e5de0a..3f1cc82afa 100644
--- a/tracing-serde/README.md
+++ b/tracing-serde/README.md
@@ -36,7 +36,7 @@ and tracing data to monitor your services in production.
 The `tracing` crate provides the APIs necessary for instrumenting
 libraries and applications to emit trace data.
 
-*Compiler support: [requires `rustc` 1.49+][msrv]*
+*Compiler support: [requires `rustc` 1.56+][msrv]*
 
 [msrv]: #supported-rust-versions
 
@@ -97,14 +97,14 @@ trace data.
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.49. The current Tracing version is not guaranteed to build on Rust
+version is 1.56. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
 project. The current stable Rust compiler and the three most recent minor
 versions before it will always be supported. For example, if the current stable
-compiler version is 1.45, the minimum supported version will not be increased
-past 1.42, three minor versions prior. Increasing the minimum supported compiler
+compiler version is 1.69, the minimum supported version will not be increased
+past 1.66, three minor versions prior. Increasing the minimum supported compiler
 version is not considered a semver breaking change as long as doing so complies
 with this policy.
 
diff --git a/tracing-serde/src/lib.rs b/tracing-serde/src/lib.rs
index 705ccce505..211feb80f6 100644
--- a/tracing-serde/src/lib.rs
+++ b/tracing-serde/src/lib.rs
@@ -32,7 +32,7 @@
 //! The `tracing` crate provides the APIs necessary for instrumenting
 //! libraries and applications to emit trace data.
 //!
-//! *Compiler support: [requires `rustc` 1.49+][msrv]*
+//! *Compiler support: [requires `rustc` 1.56+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -142,14 +142,14 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.49. The current Tracing version is not guaranteed to build on
+//! version is 1.56. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
 //! project. The current stable Rust compiler and the three most recent minor
 //! versions before it will always be supported. For example, if the current
-//! stable compiler version is 1.45, the minimum supported version will not be
-//! increased past 1.42, three minor versions prior. Increasing the minimum
+//! stable compiler version is 1.69, the minimum supported version will not be
+//! increased past 1.66, three minor versions prior. Increasing the minimum
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
diff --git a/tracing-subscriber/Cargo.toml b/tracing-subscriber/Cargo.toml
index 22373ae044..48b703becb 100644
--- a/tracing-subscriber/Cargo.toml
+++ b/tracing-subscriber/Cargo.toml
@@ -20,7 +20,7 @@ categories = [
     "asynchronous",
 ]
 keywords = ["logging", "tracing", "metrics", "subscriber"]
-rust-version = "1.50.0"
+rust-version = "1.56.0"
 
 [features]
 
diff --git a/tracing-subscriber/README.md b/tracing-subscriber/README.md
index 124fb956d0..7c1212c6a9 100644
--- a/tracing-subscriber/README.md
+++ b/tracing-subscriber/README.md
@@ -32,21 +32,21 @@ Utilities for implementing and composing [`tracing`][tracing] subscribers.
 [discord-url]: https://discord.gg/EeF3cQw
 [maint-badge]: https://img.shields.io/badge/maintenance-experimental-blue.svg
 
-*Compiler support: [requires `rustc` 1.50+][msrv]*
+*Compiler support: [requires `rustc` 1.56+][msrv]*
 
 [msrv]: #supported-rust-versions
 
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.50. The current Tracing version is not guaranteed to build on Rust
+version is 1.56. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
 project. The current stable Rust compiler and the three most recent minor
 versions before it will always be supported. For example, if the current stable
-compiler version is 1.45, the minimum supported version will not be increased
-past 1.42, three minor versions prior. Increasing the minimum supported compiler
+compiler version is 1.69, the minimum supported version will not be increased
+past 1.66, three minor versions prior. Increasing the minimum supported compiler
 version is not considered a semver breaking change as long as doing so complies
 with this policy.
 
diff --git a/tracing-subscriber/src/fmt/mod.rs b/tracing-subscriber/src/fmt/mod.rs
index 025e17504d..cd53cc5e88 100644
--- a/tracing-subscriber/src/fmt/mod.rs
+++ b/tracing-subscriber/src/fmt/mod.rs
@@ -16,7 +16,7 @@
 //! tracing-subscriber = "0.3"
 //! ```
 //!
-//! *Compiler support: [requires `rustc` 1.49+][msrv]*
+//! *Compiler support: [requires `rustc` 1.56+][msrv]*
 //!
 //! [msrv]: super#supported-rust-versions
 //!
diff --git a/tracing-subscriber/src/lib.rs b/tracing-subscriber/src/lib.rs
index b1ef7480e9..761e239af3 100644
--- a/tracing-subscriber/src/lib.rs
+++ b/tracing-subscriber/src/lib.rs
@@ -10,7 +10,7 @@
 //! `tracing-subscriber` is intended for use by both `Subscriber` authors and
 //! application authors using `tracing` to instrument their applications.
 //!
-//! *Compiler support: [requires `rustc` 1.50+][msrv]*
+//! *Compiler support: [requires `rustc` 1.56+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //!
@@ -138,14 +138,14 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.50. The current Tracing version is not guaranteed to build on
+//! version is 1.56. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
 //! project. The current stable Rust compiler and the three most recent minor
 //! versions before it will always be supported. For example, if the current
-//! stable compiler version is 1.45, the minimum supported version will not be
-//! increased past 1.42, three minor versions prior. Increasing the minimum
+//! stable compiler version is 1.69, the minimum supported version will not be
+//! increased past 1.66, three minor versions prior. Increasing the minimum
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!
diff --git a/tracing-tower/Cargo.toml b/tracing-tower/Cargo.toml
index 1ea0a572ea..80923c82d8 100644
--- a/tracing-tower/Cargo.toml
+++ b/tracing-tower/Cargo.toml
@@ -15,7 +15,7 @@ categories = [
 ]
 keywords = ["logging", "tracing"]
 license = "MIT"
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 
 [features]
 default = ["tower-layer", "tower-make"]
diff --git a/tracing/Cargo.toml b/tracing/Cargo.toml
index 313c3370e6..50bedb07fa 100644
--- a/tracing/Cargo.toml
+++ b/tracing/Cargo.toml
@@ -25,7 +25,7 @@ categories = [
 ]
 keywords = ["logging", "tracing", "metrics", "async"]
 edition = "2018"
-rust-version = "1.49.0"
+rust-version = "1.56.0"
 
 [dependencies]
 tracing-core = { path = "../tracing-core", version = "0.1.30", default-features = false }
diff --git a/tracing/README.md b/tracing/README.md
index 6947345771..1de6560a66 100644
--- a/tracing/README.md
+++ b/tracing/README.md
@@ -47,7 +47,7 @@ data as well as textual messages.
 The `tracing` crate provides the APIs necessary for instrumenting libraries
 and applications to emit trace data.
 
-*Compiler support: [requires `rustc` 1.49+][msrv]*
+*Compiler support: [requires `rustc` 1.56+][msrv]*
 
 [msrv]: #supported-rust-versions
 
@@ -443,14 +443,14 @@ undergoing active development. They may be less stable than `tracing` and
 ## Supported Rust Versions
 
 Tracing is built against the latest stable release. The minimum supported
-version is 1.49. The current Tracing version is not guaranteed to build on Rust
+version is 1.56. The current Tracing version is not guaranteed to build on Rust
 versions earlier than the minimum supported version.
 
 Tracing follows the same compiler support policies as the rest of the Tokio
 project. The current stable Rust compiler and the three most recent minor
 versions before it will always be supported. For example, if the current stable
-compiler version is 1.45, the minimum supported version will not be increased
-past 1.42, three minor versions prior. Increasing the minimum supported compiler
+compiler version is 1.69, the minimum supported version will not be increased
+past 1.66, three minor versions prior. Increasing the minimum supported compiler
 version is not considered a semver breaking change as long as doing so complies
 with this policy.
 
diff --git a/tracing/src/lib.rs b/tracing/src/lib.rs
index dfb76e9971..e7f52ba0ea 100644
--- a/tracing/src/lib.rs
+++ b/tracing/src/lib.rs
@@ -19,7 +19,7 @@
 //! The `tracing` crate provides the APIs necessary for instrumenting libraries
 //! and applications to emit trace data.
 //!
-//! *Compiler support: [requires `rustc` 1.49+][msrv]*
+//! *Compiler support: [requires `rustc` 1.56+][msrv]*
 //!
 //! [msrv]: #supported-rust-versions
 //! # Core Concepts
@@ -859,14 +859,14 @@
 //! ## Supported Rust Versions
 //!
 //! Tracing is built against the latest stable release. The minimum supported
-//! version is 1.49. The current Tracing version is not guaranteed to build on
+//! version is 1.56. The current Tracing version is not guaranteed to build on
 //! Rust versions earlier than the minimum supported version.
 //!
 //! Tracing follows the same compiler support policies as the rest of the Tokio
 //! project. The current stable Rust compiler and the three most recent minor
 //! versions before it will always be supported. For example, if the current
-//! stable compiler version is 1.45, the minimum supported version will not be
-//! increased past 1.42, three minor versions prior. Increasing the minimum
+//! stable compiler version is 1.69, the minimum supported version will not be
+//! increased past 1.66, three minor versions prior. Increasing the minimum
 //! supported compiler version is not considered a semver breaking change as
 //! long as doing so complies with this policy.
 //!