diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 682fd46d0317..6d3a92624fc3 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -590,8 +590,8 @@ in
       "sha256-+DDeD9YWo98meLZU2Mzu5AE0S7HFg6kfxeUWUh9XcQA=";
 
   mypy-boto3-guardduty =
-    buildMypyBoto3Package "guardduty" "1.43.86"
-      "sha256-TZggEBYh+bqQ5EH+LZzzCjnVbB+s+rL2KHPLvUNmhCg=";
+    buildMypyBoto3Package "guardduty" "1.43.88"
+      "sha256-UjHoeDHvr2QKwUQ2NEMoE38Lxa/vAiUNmJqp1XaVP5Q=";
 
   mypy-boto3-health =
     buildMypyBoto3Package "health" "1.43.0"