diff --git a/Dockerfile b/Dockerfile
index 9bdfec7..5be0979 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM denoland/deno:alpine AS build
+FROM denoland/deno:alpine-2.4.2 AS build
 WORKDIR /app/src
 COPY . .