diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index d610253ce2fc..c6bc40d275f5 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -1154,8 +1154,8 @@ rec {
       "sha256-URJDdSfpwq2lfpdnf5U4CpQJpZTtpZswc0lODkb2Wfc=";
 
   mypy-boto3-route53resolver =
-    buildMypyBoto3Package "route53resolver" "1.38.0"
-      "sha256-DN8l+AbgvGY/VB8OufFoq+75u8iMWMIvnX80nfdwgT0=";
+    buildMypyBoto3Package "route53resolver" "1.38.43"
+      "sha256-3wX/Uq4G/Uz1wA2kZgzejqxE5QFiZpyozM+XpBnsO4M=";
 
   mypy-boto3-rum =
     buildMypyBoto3Package "rum" "1.38.0"