diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 44f853de5d2b..1556f8a8c64f 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -133,7 +133,7 @@ rec {
 
   mypy-boto3-chime-sdk-voice = buildMypyBoto3Package "chime-sdk-voice" "1.34.0" "sha256-9fQQgWFKeabSblJIhP6mN0CEnSixkz1r3mf/k6IL/BE=";
 
-  mypy-boto3-cleanrooms = buildMypyBoto3Package "cleanrooms" "1.34.0" "sha256-gucAudT1eWqm/y/gynY7pgBXbs5n7fnzfeSlVQad7HI=";
+  mypy-boto3-cleanrooms = buildMypyBoto3Package "cleanrooms" "1.34.78" "sha256-76zy6rTsSqmKdwrZwBsf7m6qPZXSdi6GpQEXMvN82Tw=";
 
   mypy-boto3-cloud9 = buildMypyBoto3Package "cloud9" "1.34.24" "sha256-fryD7UfO5cdFS7vMxmZaT9LW4nNSGTQCd3NyD60f9wA=";