diff --git a/Dockerfile b/Dockerfile
index a4f989bc..4551448e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@
 ARG BASE_URL=
 
 # Build stage
-FROM mirror.gcr.io/library/node:20-alpine AS builder
+FROM mirror.gcr.io/library/node:26-alpine AS builder
 WORKDIR /app
 COPY package*.json ./
 COPY vendor ./vendor
diff --git a/Dockerfile.nonroot b/Dockerfile.nonroot
index fc31e1a2..ebeb6f30 100644
--- a/Dockerfile.nonroot
+++ b/Dockerfile.nonroot
@@ -5,7 +5,7 @@
 ARG BASE_URL=
 
 # Build stage (identical to main Dockerfile)
-FROM mirror.gcr.io/library/node:20-alpine AS builder
+FROM mirror.gcr.io/library/node:26-alpine AS builder
 WORKDIR /app
 COPY package*.json ./
 COPY vendor ./vendor