diff --git a/services/tool-firewall/Dockerfile b/services/tool-firewall/Dockerfile
index ea59078..f88fa60 100644
--- a/services/tool-firewall/Dockerfile
+++ b/services/tool-firewall/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/library/golang:1.26.5-alpine@sha256:0178a641fbb4858c5f1b48e34bdaabe0350a330a1b1149aabd498d0699ff5fb2 AS build
+FROM docker.io/library/golang:1.27rc2-alpine@sha256:dcbb18cc5fa1082364dc6aa95224b6b55429d09cbb9631a053d8064c1c367300 AS build
 WORKDIR /src
 COPY go.mod go.sum* ./
 RUN go mod download 2>/dev/null || true