diff --git a/pkgs/development/python-modules/wsproto/default.nix b/pkgs/development/python-modules/wsproto/default.nix
index 8773ef30b3d3..f9062c185841 100644
--- a/pkgs/development/python-modules/wsproto/default.nix
+++ b/pkgs/development/python-modules/wsproto/default.nix
@@ -1,14 +1,20 @@
-{ buildPythonPackage, fetchPypi, h11, enum34 }:
+{ buildPythonPackage, fetchPypi, h11, enum34, pytest }:
 
 buildPythonPackage rec {
   pname = "wsproto";
-  version = "0.12.0";
+  version = "0.13.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1fcb726d448f1b9bcbea884e26621af5ddd01d2d502941a024f4c727828b6009";
+    sha256 = "fd6020d825022247053400306448e161d8740bdd52e328e5553cd9eee089f705";
   };
 
   propagatedBuildInputs = [ h11 enum34 ];
 
+  checkInputs = [ pytest ];
+
+  checkPhase = ''
+    py.test
+  '';
+
 }