--- a/tests/test-lock.py	Fri Nov 22 11:08:59 2019 -0800
+++ b/tests/test-lock.py	Tue Nov 19 18:38:17 2019 -0800
@@ -65,7 +65,7 @@
     def releasefn(self):
         self._releasecalled = True
 
-    def postreleasefn(self):
+    def postreleasefn(self, success):
         self._postreleasecalled = True
 
     def assertacquirecalled(self, called):