diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index fa5479428f46..c7dfd88ecb7a 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -769,8 +769,8 @@ in
       "sha256-NMF0B6cBjIFJl7CKrwxj89oFJeYnDhpdkmCTJdXa3w0=";
 
   mypy-boto3-lambda =
-    buildMypyBoto3Package "lambda" "1.40.7"
-      "sha256-6L7fA6Z/reXbhh/pAt8GMGQpI1Lu1feF90zQ5ZGUjbk=";
+    buildMypyBoto3Package "lambda" "1.40.50"
+      "sha256-pwngrGlAeDqtCP9c+Yx4miFYQLqxfkaMpeIjBa0K6gU=";
 
   mypy-boto3-lex-models =
     buildMypyBoto3Package "lex-models" "1.40.19"