diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 2f63a146f29..bbd31aa7b28 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -18775,13 +18775,18 @@ in modules // {
 
   pydispatcher = buildPythonPackage (rec {
     version = "2.0.5";
-    disabled = isPy35;
     name = "pydispatcher-${version}";
     src = pkgs.fetchurl {
       url = "mirror://pypi/P/PyDispatcher/PyDispatcher-${version}.tar.gz";
       sha256 = "1bswbmhlbqdxlgbxlb6xrlm4k253sg8nvpl1whgsys8p3fg0cw2m";
     };
 
+    buildInputs = with self; [ pytest ];
+
+    checkPhase = ''
+      py.test
+    '';
+
     meta = {
       homepage = http://pydispatcher.sourceforge.net/;
       description = "Signal-registration and routing infrastructure for use in multiple contexts";