diff --git a/docs.Dockerfile b/docs.Dockerfile
index cf0d30835c19d21380942ddbfc8af63dc9d5d802..2db890b8d3582ebf16777daae5beb972f8cdde85 100644
--- a/docs.Dockerfile
+++ b/docs.Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine
+FROM alpine:3.14
 
 ENV PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/root/.local/bin