diff --git a/pkgs/development/python-modules/tensorflow/default.nix b/pkgs/development/python-modules/tensorflow/default.nix
index 469ae6fe3d6..de2a84a60ae 100644
--- a/pkgs/development/python-modules/tensorflow/default.nix
+++ b/pkgs/development/python-modules/tensorflow/default.nix
@@ -365,6 +365,7 @@ in buildPythonPackage {
   ] ++ lib.optionals (!isPy3k) [
     mock
     future
+    functools32
   ] ++ lib.optionals (pythonOlder "3.4") [
     backports_weakref enum34
   ] ++ lib.optionals withTensorboard [