diff --git a/pkgs/development/python-modules/proto-plus/default.nix b/pkgs/development/python-modules/proto-plus/default.nix
index 4784dcdfa2f..3fa782cb471 100644
--- a/pkgs/development/python-modules/proto-plus/default.nix
+++ b/pkgs/development/python-modules/proto-plus/default.nix
@@ -10,12 +10,12 @@
 
 buildPythonPackage rec {
   pname = "proto-plus";
-  version = "1.13.0";
+  version = "1.18.1";
   disabled = !isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1i5jjnwpd288378h37zads08h695iwmhxm0sxbr3ln6aax97rdb1";
+    sha256 = "cfc45474c7eda0fe3c4b9eca2542124f2a0ff5543242bec61e8d08bce0f5bd48";
   };
 
   propagatedBuildInputs = [ protobuf ];