diff --git a/Dockerfile b/Dockerfile
index 056ff5af..9871d66a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:latest as py-ea
+FROM alpine:3.8 as py-ea
 ARG ELASTALERT_VERSION=v0.2.0b2
 ENV ELASTALERT_VERSION=${ELASTALERT_VERSION}
 # URL from which to download Elastalert.