diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index ac028abb008f..5223fdf5731f 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -1346,8 +1346,8 @@ rec {
       "sha256-72VjJGOWAphFUZfMxzSaYyycUtoL1St08G/SAEhDriQ=";
 
   mypy-boto3-synthetics =
-    buildMypyBoto3Package "synthetics" "1.35.0"
-      "sha256-mYgbBllheierTfGH+K8PlpxMoMxGSX+6dckcAsrFeHg=";
+    buildMypyBoto3Package "synthetics" "1.35.18"
+      "sha256-p/jKkj4a1vUkgfmUAkKY6nbDKKaBNAJeuFOea7Uvq7M=";
 
   mypy-boto3-textract =
     buildMypyBoto3Package "textract" "1.35.0"