diff --git a/builds/runtimes/pypy-2.3 b/builds/runtimes/pypy-2.3
index 033538f..27a8bbe 100755
--- a/builds/runtimes/pypy-2.3
+++ b/builds/runtimes/pypy-2.3
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # Build Path: /app/.heroku/python/
-# Build Deps: libraries/sqlite
+# Build Deps: libraries/sqlite, libraries/libffi
 
 # NOTICE: This formula only works for the cedar-14 stack, not cedar.