diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 734cce37365..a3458d522e4 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7128,7 +7128,7 @@ let
 
     propagatedBuildInputs = with self; [
       requests2 # Needs to be first;
-      cgroup-utils docker-custom docutils lti multiprocessing pygments pymongo
+      cgroup-utils docker-custom docutils lti pygments pymongo
       pyyaml rpyc selenium sh simpleldap tidylib virtual-display web
       websocket_client
     ];
@@ -7138,6 +7138,12 @@ let
       md5 = "40474dd6b6d4fc26e47a1d9c77bcf943";
     };
 
+    # Remove multiprocessing
+    # https://github.com/UCL-INGI/INGInious/issues/73
+    patchPhase = ''
+      sed -i '34d' setup.py
+    '';
+
     meta = {
       description = "An intelligent grader that allows secured and automated testing of code made by students.";
       homepage = "https://github.com/UCL-INGI/INGInious";