diff --git a/pkgs/development/python-modules/twitter-common-lang/default.nix b/pkgs/development/python-modules/twitter-common-lang/default.nix
index 3541dacce4e..53135a94d62 100644
--- a/pkgs/development/python-modules/twitter-common-lang/default.nix
+++ b/pkgs/development/python-modules/twitter-common-lang/default.nix
@@ -5,11 +5,11 @@
 
 buildPythonPackage rec {
   pname   = "twitter.common.lang";
-  version = "0.3.9";
+  version = "0.3.10";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1l8fmnsrx7hgg3ivslg588rnl9n1gfjn2w6224fr8rs7zmkd5lan";
+    sha256 = "9cd2d05a7f45c50c76c99024b3cad180bec42b0c65dfdc1f8ddc731bdd3b3af8";
   };
 
   meta = with stdenv.lib; {