diff --git a/docker/dicompot/Dockerfile b/docker/dicompot/Dockerfile
index 51a1fcd2..e571a585 100644
--- a/docker/dicompot/Dockerfile
+++ b/docker/dicompot/Dockerfile
@@ -1,8 +1,7 @@
-FROM alpine:3.12
+FROM alpine:3.13
 #
 # Setup apk
-RUN sed -i 's/dl-cdn/dl-2/g' /etc/apk/repositories && \
-    apk -U add \
+RUN apk -U add \
                    build-base \
                    git \
                    g++ && \