diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 178331fb8e01..e415f81df7f6 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -462,8 +462,8 @@ rec {
       "sha256-7Sz4g1+0B99ZybhrzJOS0K71thybaDPUYmF4+SN1sGc=";
 
   mypy-boto3-ecs =
-    buildMypyBoto3Package "ecs" "1.37.23"
-      "sha256-laN5lEqfTiYJmhjt0FxwrH6rS1YHjHTCCaTYNfmuV6s=";
+    buildMypyBoto3Package "ecs" "1.37.26"
+      "sha256-RsP/geW/mnQQuzglIlPgNMkBs5Q862S8fUBxLe6x7og=";
 
   mypy-boto3-efs =
     buildMypyBoto3Package "efs" "1.37.0"