diff --git a/pkgs/development/python-modules/mypy-protobuf/default.nix b/pkgs/development/python-modules/mypy-protobuf/default.nix
index 1194280ef4b..a06a378a076 100644
--- a/pkgs/development/python-modules/mypy-protobuf/default.nix
+++ b/pkgs/development/python-modules/mypy-protobuf/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonApplication rec {
   pname = "mypy-protobuf";
-  version = "1.7";
+  version = "1.9";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "00b030f9558454ec237576def2de9b7e50517ae039e03d84482b6ddf1bd1d54d";
+    sha256 = "be1f14b0b841b49adb2f6018eaa1ce9529c8147eb561909baaa757e8cf9e821b";
   };
 
   propagatedBuildInputs = [ protobuf ];