diff --git a/cluster/images/provider-azuread/Dockerfile b/cluster/images/provider-azuread/Dockerfile
index 4ede202..edbcc7a 100644
--- a/cluster/images/provider-azuread/Dockerfile
+++ b/cluster/images/provider-azuread/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.21.2
+FROM alpine:3.21.3
 RUN apk --no-cache add ca-certificates bash
 
 ARG TARGETOS