diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index e1a7e40c69a7..c91ec67ea7ba 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -1153,8 +1153,8 @@ in
       "sha256-AasFHhNs7b904wj2hzm0Hhj0CHit16bl+f+0cl9Y/t4=";
 
   mypy-boto3-route53resolver =
-    buildMypyBoto3Package "route53resolver" "1.41.0"
-      "sha256-joHFVkMMRoB404y25Cov1uctMk53Le174ZomeNNYz+8=";
+    buildMypyBoto3Package "route53resolver" "1.42.3"
+      "sha256-Q+Mzw0HmswKrJIH1KanYN/Hk1Uba3Sel5SdcX/1yH1w=";
 
   mypy-boto3-rum =
     buildMypyBoto3Package "rum" "1.41.0"