diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 86e94e560164..cdaa3f47d4a2 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -1426,8 +1426,8 @@ rec {
       "sha256-Om/TFPBZh3xr0inpGzCpvTNij9DTPq8dV1ikX8g4YtE=";
 
   mypy-boto3-workspaces =
-    buildMypyBoto3Package "workspaces" "1.35.43"
-      "sha256-l6Jfcb3+7RbUuXBsQvtYGqffbVobjFldwscGSIJR6Cs=";
+    buildMypyBoto3Package "workspaces" "1.35.66"
+      "sha256-z5mP/vfVc21NGQ1i5usm+uol9V3aQqDJn0ot1AJxaCI=";
 
   mypy-boto3-workspaces-web =
     buildMypyBoto3Package "workspaces-web" "1.35.23"