diff --git a/pkgs/development/python-modules/3to2/default.nix b/pkgs/development/python-modules/3to2/default.nix
index ff64a6d1a47..8870388c284 100644
--- a/pkgs/development/python-modules/3to2/default.nix
+++ b/pkgs/development/python-modules/3to2/default.nix
@@ -24,6 +24,8 @@ buildPythonPackage rec {
   # Test failing due to upstream issue (https://bitbucket.org/amentajo/lib3to2/issues/50/testsuite-fails-with-new-python-35)
   doCheck = false;
 
+  dontUsePythonRecompileBytecode = true;
+
   meta = {
     homepage = "https://bitbucket.org/amentajo/lib3to2";
     description = "Refactors valid 3.x syntax into valid 2.x syntax, if a syntactical conversion is possible";