diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index a0141729e30..85226883193 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -30047,6 +30047,24 @@ EOF
     };
   };
 
+  mailcap-fix = buildPythonPackage rec {
+    name = "mailcap-fix-${version}";
+    version = "1.0.1";
+
+    disabled = isPy36; # this fix is merged into python 3.6
+
+    src = pkgs.fetchurl {
+      url = "mirror://pypi/m/mailcap-fix/${name}.tar.gz";
+      sha256 = "02lijkq6v379r8zkqg9q2srin3i80m4wvwik3hcbih0s14v0ng0i";
+    };
+
+    meta = with stdenv.lib; {
+      description = "A patched mailcap module that conforms to RFC 1524";
+      homepage = "https://github.com/michael-lazar/mailcap_fix";
+      license = licenses.unlicense;
+    };
+  };
+
   maildir-deduplicate = buildPythonPackage rec {
     name = "maildir-deduplicate-${version}";
     version = "1.0.2";