diff --git a/pkgs/development/python-modules/autopep8/default.nix b/pkgs/development/python-modules/autopep8/default.nix
index 7b7131f2a7fc..2dabb70197b5 100644
--- a/pkgs/development/python-modules/autopep8/default.nix
+++ b/pkgs/development/python-modules/autopep8/default.nix
@@ -1,4 +1,6 @@
-{ stdenv, fetchPypi, buildPythonPackage, pycodestyle, glibcLocales }:
+{ stdenv, fetchPypi, buildPythonPackage, pycodestyle, glibcLocales
+, toml
+}:
 
 buildPythonPackage rec {
   pname = "autopep8";
@@ -9,7 +11,7 @@ buildPythonPackage rec {
     sha256 = "60fd8c4341bab59963dafd5d2a566e94f547e660b9b396f772afe67d8481dbf0";
   };
 
-  propagatedBuildInputs = [ pycodestyle ];
+  propagatedBuildInputs = [ pycodestyle toml ];
 
   # One test fails:
   # FAIL: test_recursive_should_not_crash_on_unicode_filename (test.test_autopep8.CommandLineTests)