diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c1a274d9e..fde05ca74 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,4 @@
-image: elixir:1.4
+image: elixir:1.6
 
 services:
   - name: mdillon/postgis:9.6