diff --git a/pkgs/development/python-modules/d2to1/default.nix b/pkgs/development/python-modules/d2to1/default.nix
index 195b20c27e4f..70b0da89d5ba 100644
--- a/pkgs/development/python-modules/d2to1/default.nix
+++ b/pkgs/development/python-modules/d2to1/default.nix
@@ -5,7 +5,7 @@
 }:
 buildPythonPackage rec {
   pname = "d2to1";
-  version = "0.2.12";
+  version = "0.2.12.post1";
 
   checkInputs = [ nose ];
 
@@ -13,7 +13,7 @@ buildPythonPackage rec {
     owner = "embray";
     repo = pname;
     rev = version;
-    sha256 = "1q04ab8vjvx7fmq9ckkl8r9hlwwbqiyjbzaa4v1mv5zicfssxwsi";
+    sha256 = "1hzq51qbzsc27yy8swp08kf42mamag7qcabbrigzj4m6ivb5chi2";
   };
 
   meta = with lib;{