diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index edd1754dea74..e6e43cc09977 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -207,8 +207,8 @@ in
       "sha256-51MoyiVhP371RZ8pD0N38qenWpsW3HTn4PL/6Hd8Ki8=";
 
   mypy-boto3-cleanrooms =
-    buildMypyBoto3Package "cleanrooms" "1.43.13"
-      "sha256-y9b/pwcRa4VFZ0v0rDwzdzYTnCyn6lgeNmk9JTLRtEI=";
+    buildMypyBoto3Package "cleanrooms" "1.43.38"
+      "sha256-m7y4NwYn4tNtJ2V8wlXSkOMdhTrNFZUWXc8g1yqLFGA=";
 
   mypy-boto3-cloud9 =
     buildMypyBoto3Package "cloud9" "1.43.0"