diff --git a/Dockerfile b/Dockerfile
index 2a4df0c..df20c29 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3
+FROM alpine:3.13
 
 RUN apk --update --no-cache add nodejs nodejs-npm python3 py3-pip jq curl bash git docker && \
 	ln -sf /usr/bin/python3 /usr/bin/python