diff --git a/backend/Dockerfile b/backend/Dockerfile
index c8be647..41bcb1d 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -1,5 +1,5 @@
 # eclipse-temurin:21-jre-alpine
-FROM eclipse-temurin:25-jre-alpine@sha256:3c0a9084927a221ccd1d007fcaf614465672c0af37aaa834c5184483afe56d61
+FROM eclipse-temurin:25-jre-alpine@sha256:b7528962e65d43064d8a8b67ba175367896bc948363ea2d3fcd7f10d34e1f048
 # brotli-libs 1.2.0-r1 -> 1.2.1-r0 (CVE-2026-111497)
 RUN apk upgrade --no-cache p11-kit p11-kit-trust libexpat openssl libssl3 brotli-libs
 RUN addgroup -S appgroup && adduser -S appuser -G appgroup