diff --git a/Dockerfile b/Dockerfile
index 0ced361..59aa375 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,7 @@ LABEL org.label-schema.name="docker-bench-security" \
       org.label-schema.vcs-url="https://github.com/docker/docker-bench-security.git"
 
 RUN \
+  apk upgrade --no-cache && \
   apk add --no-cache \
     docker \
     dumb-init && \
@@ -15,7 +16,6 @@ COPY ./*.sh /usr/local/bin/
 
 COPY ./tests/*.sh /usr/local/bin/tests/
 
-
 WORKDIR /usr/local/bin
 
 ENTRYPOINT [ "/usr/bin/dumb-init", "docker-bench-security.sh" ]