diff --git a/pkgs/development/python-modules/pyro4/default.nix b/pkgs/development/python-modules/pyro4/default.nix
index 3de7afd9668d..ffb8584f9411 100644
--- a/pkgs/development/python-modules/pyro4/default.nix
+++ b/pkgs/development/python-modules/pyro4/default.nix
@@ -12,13 +12,13 @@
 
 buildPythonPackage rec {
   pname = "Pyro4";
-  version = "4.80";
+  version = "4.81";
 
   disabled = isPy27;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "46847ca703de3f483fbd0b2d22622f36eff03e6ef7ec7704d4ecaa3964cb2220";
+    sha256 = "e130da06478b813173b959f7013d134865e07fbf58cc5f1a2598f99479cdac5f";
   };
 
   propagatedBuildInputs = [