diff --git a/Dockerfile b/Dockerfile
index 7e50f51..33474c3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,8 +8,8 @@ RUN go mod download
 RUN go build ./cmd/httpx
 
 FROM alpine:3.18.2
-RUN apk -U upgrade --no-cache \
+RUN apk upgrade --no-cache \
     && apk add --no-cache bind-tools ca-certificates chromium
 COPY --from=builder /app/httpx /usr/local/bin/
 
-ENTRYPOINT ["httpx"]
\ No newline at end of file
+ENTRYPOINT ["httpx"]