diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 5e1c529..8f5bfe9 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -20,7 +20,7 @@ jobs:
       fail-fast: false
 
     container:
-      image: crystallang/crystal:0.35.1
+      image: crystallang/crystal:1.6.0
 
     steps:
       - name: Checkout code