diff --git a/Dockerfile b/Dockerfile
index cc220db..97194f3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,7 @@ RUN CGO_ENABLED=0 GOOS=linux go build \
     ./cmd/
 
 # ---- Runtime image ----
-FROM alpine:3.21
+FROM alpine:3.22
 
 RUN apk --no-cache add ca-certificates tzdata