diff --git a/src/biz/Dockerfile b/src/biz/Dockerfile
index 928ee199..fb34ab17 100644
--- a/src/biz/Dockerfile
+++ b/src/biz/Dockerfile
@@ -1,3 +1,3 @@
-FROM alpine:3.19
+FROM alpine:3.21
 
 RUN apk add stress-ng