diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 55130de6c032..12ef954aae92 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -226,8 +226,8 @@ rec {
       "sha256-E/vP9Z9Cd6QZDJ2es245eXiUjTSsV1XNN9qNnIbXJ7E=";
 
   mypy-boto3-cloudformation =
-    buildMypyBoto3Package "cloudformation" "1.38.0"
-      "sha256-VjOZFmwH6R4GlfseWBA6JIsr7g214sPwcVV3bdYxGAU=";
+    buildMypyBoto3Package "cloudformation" "1.38.31"
+      "sha256-9BhSMfqrl7+1CyXcEyMzPGMKCS/6jBU1byERb8kqf0I=";
 
   mypy-boto3-cloudfront =
     buildMypyBoto3Package "cloudfront" "1.38.12"