diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 5943a3bd32e5..0eb4406728e2 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -1082,8 +1082,8 @@ rec {
       "sha256-kwKCaPtSl9xFVw0cTDbveXOFs5r7YzowGfceDSo+qnc=";
 
   mypy-boto3-rbin =
-    buildMypyBoto3Package "rbin" "1.35.0"
-      "sha256-85yUjKQ8oiECUYHhmmYrDssyFSQb6itfIRY2iuwCZdo=";
+    buildMypyBoto3Package "rbin" "1.35.66"
+      "sha256-12AIEWhTwK3YdCUhImozJeO83Ye9G2D1VaKMeqbV/pE=";
 
   mypy-boto3-rds =
     buildMypyBoto3Package "rds" "1.35.64"