diff --git a/Cargo.lock b/Cargo.lock
index 45efdcb7..8343246f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -557,7 +557,7 @@ dependencies = [
 
 [[package]]
 name = "serde_with"
-version = "2.3.0"
+version = "2.3.1"
 dependencies = [
  "base64",
  "chrono",
@@ -585,7 +585,7 @@ dependencies = [
 
 [[package]]
 name = "serde_with_macros"
-version = "2.3.0"
+version = "2.3.1"
 dependencies = [
  "darling",
  "expect-test",
diff --git a/README.md b/README.md
index 43392fa7..004d287a 100644
--- a/README.md
+++ b/README.md
@@ -176,14 +176,14 @@ Foo::Bytes {
 }
 ```
 
-[`DisplayFromStr`]: https://docs.rs/serde_with/2.3.0/serde_with/struct.DisplayFromStr.html
-[`with_prefix!`]: https://docs.rs/serde_with/2.3.0/serde_with/macro.with_prefix.html
-[feature flags]: https://docs.rs/serde_with/2.3.0/serde_with/guide/feature_flags/index.html
-[skip_serializing_none]: https://docs.rs/serde_with/2.3.0/serde_with/attr.skip_serializing_none.html
-[StringWithSeparator]: https://docs.rs/serde_with/2.3.0/serde_with/struct.StringWithSeparator.html
-[user guide]: https://docs.rs/serde_with/2.3.0/serde_with/guide/index.html
+[`DisplayFromStr`]: https://docs.rs/serde_with/2.3.1/serde_with/struct.DisplayFromStr.html
+[`with_prefix!`]: https://docs.rs/serde_with/2.3.1/serde_with/macro.with_prefix.html
+[feature flags]: https://docs.rs/serde_with/2.3.1/serde_with/guide/feature_flags/index.html
+[skip_serializing_none]: https://docs.rs/serde_with/2.3.1/serde_with/attr.skip_serializing_none.html
+[StringWithSeparator]: https://docs.rs/serde_with/2.3.1/serde_with/struct.StringWithSeparator.html
+[user guide]: https://docs.rs/serde_with/2.3.1/serde_with/guide/index.html
 [with-annotation]: https://serde.rs/field-attrs.html#with
-[as-annotation]: https://docs.rs/serde_with/2.3.0/serde_with/guide/serde_as/index.html
+[as-annotation]: https://docs.rs/serde_with/2.3.1/serde_with/guide/serde_as/index.html
 
 ## License
 
diff --git a/serde_with/CHANGELOG.md b/serde_with/CHANGELOG.md
index 7accb38e..23a7f446 100644
--- a/serde_with/CHANGELOG.md
+++ b/serde_with/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [2.3.1] - 2023-03-10
+
 ### Fixed
 
 * Undo the changes to the trait bound for `Seq`. (#570, #571)
diff --git a/serde_with/Cargo.toml b/serde_with/Cargo.toml
index 9c573528..969dd049 100644
--- a/serde_with/Cargo.toml
+++ b/serde_with/Cargo.toml
@@ -6,7 +6,7 @@ authors = [
 ]
 name = "serde_with"
 rust-version = "1.60"
-version = "2.3.0"
+version = "2.3.1"
 
 categories = ["encoding", "no-std"]
 description = "Custom de/serialization functions for Rust's serde"
@@ -67,7 +67,7 @@ hex = {version = "0.4.3", optional = true, default-features = false}
 indexmap_1 = {package = "indexmap", version = "1.8", optional = true, default-features = false, features = ["serde-1"]}
 serde = {version = "1.0.122", default-features = false, features = ["derive"]}
 serde_json = {version = "1.0.45", optional = true, default-features = false}
-serde_with_macros = {path = "../serde_with_macros", version = "=2.3.0", optional = true}
+serde_with_macros = {path = "../serde_with_macros", version = "=2.3.1", optional = true}
 time_0_3 = {package = "time", version = "~0.3.11", optional = true, default-features = false}
 
 [dev-dependencies]
diff --git a/serde_with/src/lib.rs b/serde_with/src/lib.rs
index 91092ab1..42eb4272 100644
--- a/serde_with/src/lib.rs
+++ b/serde_with/src/lib.rs
@@ -26,7 +26,7 @@
 #![doc(test(attr(warn(rust_2018_idioms))))]
 // Not needed for 2018 edition and conflicts with `rust_2018_idioms`
 #![doc(test(no_crate_inject))]
-#![doc(html_root_url = "https://docs.rs/serde_with/2.3.0/")]
+#![doc(html_root_url = "https://docs.rs/serde_with/2.3.1/")]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 #![allow(
     // clippy is broken and shows wrong warnings
@@ -275,14 +275,14 @@
 //! # }
 //! ```
 //!
-//! [`DisplayFromStr`]: https://docs.rs/serde_with/2.3.0/serde_with/struct.DisplayFromStr.html
-//! [`with_prefix!`]: https://docs.rs/serde_with/2.3.0/serde_with/macro.with_prefix.html
-//! [feature flags]: https://docs.rs/serde_with/2.3.0/serde_with/guide/feature_flags/index.html
-//! [skip_serializing_none]: https://docs.rs/serde_with/2.3.0/serde_with/attr.skip_serializing_none.html
-//! [StringWithSeparator]: https://docs.rs/serde_with/2.3.0/serde_with/struct.StringWithSeparator.html
-//! [user guide]: https://docs.rs/serde_with/2.3.0/serde_with/guide/index.html
+//! [`DisplayFromStr`]: https://docs.rs/serde_with/2.3.1/serde_with/struct.DisplayFromStr.html
+//! [`with_prefix!`]: https://docs.rs/serde_with/2.3.1/serde_with/macro.with_prefix.html
+//! [feature flags]: https://docs.rs/serde_with/2.3.1/serde_with/guide/feature_flags/index.html
+//! [skip_serializing_none]: https://docs.rs/serde_with/2.3.1/serde_with/attr.skip_serializing_none.html
+//! [StringWithSeparator]: https://docs.rs/serde_with/2.3.1/serde_with/struct.StringWithSeparator.html
+//! [user guide]: https://docs.rs/serde_with/2.3.1/serde_with/guide/index.html
 //! [with-annotation]: https://serde.rs/field-attrs.html#with
-//! [as-annotation]: https://docs.rs/serde_with/2.3.0/serde_with/guide/serde_as/index.html
+//! [as-annotation]: https://docs.rs/serde_with/2.3.1/serde_with/guide/serde_as/index.html
 
 #[cfg(feature = "alloc")]
 extern crate alloc;
@@ -481,7 +481,7 @@ pub use serde_with_macros::*;
 /// # }
 /// ```
 ///
-/// [serde_as]: https://docs.rs/serde_with/2.3.0/serde_with/attr.serde_as.html
+/// [serde_as]: https://docs.rs/serde_with/2.3.1/serde_with/attr.serde_as.html
 pub struct As<T: ?Sized>(PhantomData<T>);
 
 /// Adapter to convert from `serde_as` to the serde traits.
@@ -909,7 +909,7 @@ pub struct BytesOrString;
 /// ```
 ///
 /// [`chrono::Duration`]: ::chrono_0_4::Duration
-/// [feature flag]: https://docs.rs/serde_with/2.3.0/serde_with/guide/feature_flags/index.html
+/// [feature flag]: https://docs.rs/serde_with/2.3.1/serde_with/guide/feature_flags/index.html
 pub struct DurationSeconds<
     FORMAT: formats::Format = u64,
     STRICTNESS: formats::Strictness = formats::Strict,
@@ -1037,7 +1037,7 @@ pub struct DurationSeconds<
 /// ```
 ///
 /// [`chrono::Duration`]: ::chrono_0_4::Duration
-/// [feature flag]: https://docs.rs/serde_with/2.3.0/serde_with/guide/feature_flags/index.html
+/// [feature flag]: https://docs.rs/serde_with/2.3.1/serde_with/guide/feature_flags/index.html
 pub struct DurationSecondsWithFrac<
     FORMAT: formats::Format = f64,
     STRICTNESS: formats::Strictness = formats::Strict,
@@ -1233,7 +1233,7 @@ pub struct DurationNanoSecondsWithFrac<
 /// [`SystemTime`]: std::time::SystemTime
 /// [`chrono::DateTime<Local>`]: ::chrono_0_4::DateTime
 /// [`chrono::DateTime<Utc>`]: ::chrono_0_4::DateTime
-/// [feature flag]: https://docs.rs/serde_with/2.3.0/serde_with/guide/feature_flags/index.html
+/// [feature flag]: https://docs.rs/serde_with/2.3.1/serde_with/guide/feature_flags/index.html
 pub struct TimestampSeconds<
     FORMAT: formats::Format = i64,
     STRICTNESS: formats::Strictness = formats::Strict,
@@ -1371,7 +1371,7 @@ pub struct TimestampSeconds<
 /// [`chrono::DateTime<Local>`]: ::chrono_0_4::DateTime
 /// [`chrono::DateTime<Utc>`]: ::chrono_0_4::DateTime
 /// [NaiveDateTime]: ::chrono_0_4::NaiveDateTime
-/// [feature flag]: https://docs.rs/serde_with/2.3.0/serde_with/guide/feature_flags/index.html
+/// [feature flag]: https://docs.rs/serde_with/2.3.1/serde_with/guide/feature_flags/index.html
 pub struct TimestampSecondsWithFrac<
     FORMAT: formats::Format = f64,
     STRICTNESS: formats::Strictness = formats::Strict,
diff --git a/serde_with_macros/CHANGELOG.md b/serde_with_macros/CHANGELOG.md
index cca0bd99..8995caf5 100644
--- a/serde_with_macros/CHANGELOG.md
+++ b/serde_with_macros/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [2.3.1] - 2023-03-10
+
+No changes.
+
 ## [2.3.0] - 2023-03-09
 
 No changes.
diff --git a/serde_with_macros/Cargo.toml b/serde_with_macros/Cargo.toml
index 0713008c..2f19d506 100644
--- a/serde_with_macros/Cargo.toml
+++ b/serde_with_macros/Cargo.toml
@@ -2,7 +2,7 @@
 authors = ["Jonas Bushart"]
 name = "serde_with_macros"
 rust-version = "1.60"
-version = "2.3.0"
+version = "2.3.1"
 
 categories = ["encoding"]
 description = "proc-macro library for serde_with"
diff --git a/serde_with_macros/src/lib.rs b/serde_with_macros/src/lib.rs
index 3c9607f6..cf2217fb 100644
--- a/serde_with_macros/src/lib.rs
+++ b/serde_with_macros/src/lib.rs
@@ -26,7 +26,7 @@
 #![doc(test(attr(warn(rust_2018_idioms))))]
 // Not needed for 2018 edition and conflicts with `rust_2018_idioms`
 #![doc(test(no_crate_inject))]
-#![doc(html_root_url = "https://docs.rs/serde_with_macros/2.3.0/")]
+#![doc(html_root_url = "https://docs.rs/serde_with_macros/2.3.1/")]
 // Necessary to silence the warning about clippy::unknown_clippy_lints on nightly
 #![allow(renamed_and_removed_lints)]
 // Necessary for nightly clippy lints
@@ -578,8 +578,8 @@ fn field_has_attribute(field: &Field, namespace: &str, name: &str) -> bool {
 /// }
 /// ```
 ///
-/// [`serde_as`]: https://docs.rs/serde_with/2.3.0/serde_with/guide/index.html
-/// [re-exporting `serde_as`]: https://docs.rs/serde_with/2.3.0/serde_with/guide/serde_as/index.html#re-exporting-serde_as
+/// [`serde_as`]: https://docs.rs/serde_with/2.3.1/serde_with/guide/index.html
+/// [re-exporting `serde_as`]: https://docs.rs/serde_with/2.3.1/serde_with/guide/serde_as/index.html#re-exporting-serde_as
 #[proc_macro_attribute]
 pub fn serde_as(args: TokenStream, input: TokenStream) -> TokenStream {
     #[derive(FromMeta)]
@@ -969,7 +969,7 @@ fn has_type_embedded(type_: &Type, embedded_type: &syn::Ident) -> bool {
 /// [`Display`]: std::fmt::Display
 /// [`FromStr`]: std::str::FromStr
 /// [cargo-toml-rename]: https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#renaming-dependencies-in-cargotoml
-/// [serde-as-crate]: https://docs.rs/serde_with/2.3.0/serde_with/guide/serde_as/index.html#re-exporting-serde_as
+/// [serde-as-crate]: https://docs.rs/serde_with/2.3.1/serde_with/guide/serde_as/index.html#re-exporting-serde_as
 /// [serde-crate]: https://serde.rs/container-attrs.html#crate
 #[proc_macro_derive(DeserializeFromStr, attributes(serde_with))]
 pub fn derive_deserialize_fromstr(item: TokenStream) -> TokenStream {
@@ -1089,7 +1089,7 @@ fn deserialize_fromstr(mut input: DeriveInput, serde_with_crate_path: Path) -> T
 /// [`Display`]: std::fmt::Display
 /// [`FromStr`]: std::str::FromStr
 /// [cargo-toml-rename]: https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#renaming-dependencies-in-cargotoml
-/// [serde-as-crate]: https://docs.rs/serde_with/2.3.0/serde_with/guide/serde_as/index.html#re-exporting-serde_as
+/// [serde-as-crate]: https://docs.rs/serde_with/2.3.1/serde_with/guide/serde_as/index.html#re-exporting-serde_as
 /// [serde-crate]: https://serde.rs/container-attrs.html#crate
 #[proc_macro_derive(SerializeDisplay, attributes(serde_with))]
 pub fn derive_serialize_display(item: TokenStream) -> TokenStream {