diff --git a/Dockerfile b/Dockerfile
index 1290ed7..af72b47 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,5 +3,7 @@ FROM --platform=$BUILDPLATFORM alpine:latest AS builder
 RUN apk --no-cache add ca-certificates && \
   update-ca-certificates
 
+RUN apk update && apk upgrade busybox
+
 COPY berglas /bin/berglas
 ENTRYPOINT ["/bin/berglas"]