diff --git a/elixir_buildpack.config b/elixir_buildpack.config
index 9faae1c..6643794 100644
--- a/elixir_buildpack.config
+++ b/elixir_buildpack.config
@@ -2,4 +2,4 @@
 erlang_version=20.1
 
 # Elixir version
-elixir_version=1.6.0
+elixir_version=1.6.6