diff --git a/pkgs/development/python-modules/ntlm-auth/default.nix b/pkgs/development/python-modules/ntlm-auth/default.nix
index 22d8cd09c351..03890f712afc 100644
--- a/pkgs/development/python-modules/ntlm-auth/default.nix
+++ b/pkgs/development/python-modules/ntlm-auth/default.nix
@@ -9,14 +9,14 @@
 
 buildPythonPackage rec {
   pname = "ntlm-auth";
-  version = "1.0.4";
+  version = "1.0.3";
   name = "${pname}-${version}";
 
   src = fetchFromGitHub {
     owner = "jborean93";
     repo = "ntlm-auth";
     rev = "v${version}";
-    sha256 = "3d411413f1309fcd443095d57ab169b637e5b57ce701ac7ae8dbf572cb3533c0";
+    sha256 = "09f2g4ivfi9lh1kr30hlg0q4n2imnvmd79w83gza11q9nmhhiwpz";
   };
 
   checkInputs = [ mock pytest unittest2 ];