diff --git a/bin/release b/bin/release
index bd54024..f7b1a87 100755
--- a/bin/release
+++ b/bin/release
@@ -13,6 +13,7 @@ config_vars:
   LIBRARY_PATH: .heroku/vendor/lib
   LD_LIBRARY_PATH: .heroku/vendor/lib
   LANG: en_US.UTF-8
+  PYTHONHASHSEED: random
 EOF