diff --git a/base/Dockerfile b/base/Dockerfile
index 65d2b6f..3f03dfd 100644
--- a/base/Dockerfile
+++ b/base/Dockerfile
@@ -11,4 +11,7 @@ base="alpine:${version}"
 ENV \
 TZ="UTC"
 
+# Apply latest security patches.
+RUN apk upgrade --no-cache
+
 WORKDIR /srv