diff --git a/Dockerfile b/Dockerfile
index 489138b5..0923ba2f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:latest
+FROM alpine:3.16.1
 RUN apk add --no-cache bash hugo=0.99.1-r2
 WORKDIR /app
 COPY . ./