diff --git a/Dockerfile b/Dockerfile
index cae0c35..9a280f8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM denoland/deno:alpine as build-stage
+FROM denoland/deno:alpine-1.20.3 as build-stage
 WORKDIR /app
 
 RUN apk update && apk add bash