diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index feb3e78eccae..323a354e96f8 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -594,8 +594,8 @@ rec {
       "sha256-U0sYInE/1XsjwQCxmcYLVvmEQf4R6drtdSqTr0b+3OM=";
 
   mypy-boto3-guardduty =
-    buildMypyBoto3Package "guardduty" "1.35.22"
-      "sha256-+Ro4QM8DwrDlbroFb6YV6fZGYPieHB0B5+EgdNrnIzQ=";
+    buildMypyBoto3Package "guardduty" "1.35.39"
+      "sha256-6+k3i6IdCsHW8xTy/AG2JcfDqpGGj67JSihC6OPjXYE=";
 
   mypy-boto3-health =
     buildMypyBoto3Package "health" "1.35.0"