diff --git a/build/buildx.Dockerfile b/build/buildx.Dockerfile
index 606fa9e..8be22e1 100644
--- a/build/buildx.Dockerfile
+++ b/build/buildx.Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.20.3
+FROM alpine:3.21.3
 
 RUN apk --no-cache add ca-certificates