diff --git a/stacks/crystal-linux.yaml b/stacks/crystal-linux.yaml
index 9c26ef6..d004416 100644
--- a/stacks/crystal-linux.yaml
+++ b/stacks/crystal-linux.yaml
@@ -2,4 +2,4 @@ name: crystal-linux
 base: registry.getcryst.al/crystal/misc/docker:latest
 packages: []
 pkgmanager: ame
-builtin: false
+builtin: true