diff --git a/Dockerfile b/Dockerfile
index a2834ec3..7db0e00b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG ALPINE_VERSION=3.12.0
+ARG ALPINE_VERSION=3.15.0
 FROM alpine:${ALPINE_VERSION}
 
 RUN apk add --no-cache git python3 python3-dev py-pip build-base