diff --git a/elixir_buildpack.config b/elixir_buildpack.config
index 5a9703f..542441b 100644
--- a/elixir_buildpack.config
+++ b/elixir_buildpack.config
@@ -1,2 +1,3 @@
 elixir_version=1.12.2
 erlang_version=24.0.4
+clean_cache=true