diff --git a/docker/Dockerfile b/docker/Dockerfile
index 4cfc3c72..0deb6ec4 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM crystallang/crystal:1.16.3-alpine AS builder
+FROM crystallang/crystal:1.18.2-alpine AS builder
 
 RUN apk add --no-cache sqlite-static yaml-static