diff --git a/ci/crystal.yml b/ci/crystal.yml
index a0879aa..9efdbab 100644
--- a/ci/crystal.yml
+++ b/ci/crystal.yml
@@ -7,6 +7,9 @@ jobs:
 
     runs-on: ubuntu-latest
     
+    container:
+      image: crystallang/crystal
+    
     steps:
     - uses: actions/checkout@v1
     - name: Install dependencies