diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 598c0424701a..1d1fee8e643a 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -46,8 +46,8 @@ let
 in
 {
   mypy-boto3-accessanalyzer =
-    buildMypyBoto3Package "accessanalyzer" "1.41.0"
-      "sha256-XD1ljr5lXkic+ZEXWCE0AlJaeKTbx/dqzVRCfVF6FRg=";
+    buildMypyBoto3Package "accessanalyzer" "1.42.3"
+      "sha256-6eYpAzfuDqzsW0FYFpdZ4TpdPeS0D+s8Y7LX8B1QwOw=";
 
   mypy-boto3-account =
     buildMypyBoto3Package "account" "1.41.0"