diff --git a/Cargo.toml b/Cargo.toml
index e424748b..281ed9b8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -128,7 +128,7 @@ sqlx = { version = "=0.8.0-alpha.0", path = ".", default-features = false }
 
 # Common type integrations shared by multiple driver crates.
 # These are optional unless enabled in a workspace crate.
-bigdecimal = "0.3.0"
+bigdecimal = "0.4.0"
 bit-vec = "0.6.3"
 chrono = { version = "0.4.22", default-features = false }
 ipnetwork = "0.20.0"