diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index cb45d1c30eaf..d91a5a650c49 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -459,8 +459,8 @@ in
       "sha256-syjw4M02YXRXsJpM3e7OikE3sSTl/hIIJ3857PP2BII=";
 
   mypy-boto3-ecs =
-    buildMypyBoto3Package "ecs" "1.42.13"
-      "sha256-qINV3eKoz/lYLNIunllwb6u7RC19cHVbs1LInPevkjo=";
+    buildMypyBoto3Package "ecs" "1.42.29"
+      "sha256-hXpGVFL8ZLXWs7GNz8Ij3xXzKBd6HMi7/deFq4s5RrM=";
 
   mypy-boto3-efs =
     buildMypyBoto3Package "efs" "1.42.3"