diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cd88ea5..a57dcd1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -158,7 +158,7 @@ jobs:
           - { crate: deadpool-runtime, msrv: '1.75.0' }
           - { crate: deadpool-sync, msrv: '1.75.0' }
           - { crate: deadpool, msrv: '1.75.0' }
-          - { crate: deadpool-diesel, msrv: '1.75.0' }
+          - { crate: deadpool-diesel, msrv: '1.78.0' }
           - { crate: deadpool-lapin, msrv: '1.75.0' }
           - { crate: deadpool-postgres, msrv: '1.75.0' }
           - { crate: deadpool-redis, msrv: '1.75.0' }
diff --git a/diesel/CHANGELOG.md b/diesel/CHANGELOG.md
index 933fcb6..b996e21 100644
--- a/diesel/CHANGELOG.md
+++ b/diesel/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Fix deprecation warning introduced in diesel `2.2.0`
 - Update `diesel` dependency to version `2.2.0`
+- Bump up MSRV to `1.78`
 
 ## [0.6.1] - 2024-05-04
 
diff --git a/diesel/Cargo.toml b/diesel/Cargo.toml
index acb8884..8080e66 100644
--- a/diesel/Cargo.toml
+++ b/diesel/Cargo.toml
@@ -2,7 +2,7 @@
 name = "deadpool-diesel"
 version = "0.6.1"
 edition = "2021"
-rust-version = "1.75"
+rust-version = "1.78"
 authors = ["Michael P. Jung <michael.jung@terreon.de>"]
 description = "Dead simple async pool for diesel"
 keywords = ["async", "database", "pool", "diesel"]