diff --git a/Dockerfile b/Dockerfile
index 1c930df..edd27a0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.10
+FROM alpine:3.12
 
 RUN apk --no-cache add exim && \
     mkdir /var/spool/exim && \