diff --git a/Cargo.toml b/Cargo.toml
index c1406b8..48178d9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,14 +15,14 @@ doctest = false
 [dependencies]
 bytes = { version = "1", optional = true }
 postgres-types = { version = "0.2", default-features = false, optional = true }
-diesel = { version = "2", default-features = false, features = ["postgres"], optional = true }
+diesel = { version = "2.2.3", default-features = false, features = ["postgres"], optional = true }
 sqlx = { version = "0.8", default-features = false, features = ["postgres"], optional = true }
 serde = { version = "1", features = ["derive"], optional = true }
 half = { version = "2", default-features = false, optional = true }
 
 [dev-dependencies]
 postgres = { version = "0.19", default-features = false }
-diesel = { version = "2", default-features = false, features = ["32-column-tables"] }
+diesel = { version = "2.2.3", default-features = false, features = ["32-column-tables"] }
 sqlx = { version = "0", default-features = false, features = ["runtime-async-std-native-tls"] }
 async-std = { version = "1", features = ["attributes"] }
 serde_json = "1"