diff --git a/infra/docker/Dockerfile.bug-server-mock b/infra/docker/Dockerfile.bug-server-mock
index d64d93d..32a0b1e 100644
--- a/infra/docker/Dockerfile.bug-server-mock
+++ b/infra/docker/Dockerfile.bug-server-mock
@@ -1,5 +1,5 @@
 # Bug Server Mock - Phase 7
-FROM node:20-alpine
+FROM node:26-alpine
 
 WORKDIR /app
 
diff --git a/infra/docker/Dockerfile.mock-agent b/infra/docker/Dockerfile.mock-agent
index 26c28e0..0e717a8 100644
--- a/infra/docker/Dockerfile.mock-agent
+++ b/infra/docker/Dockerfile.mock-agent
@@ -1,5 +1,5 @@
 # Mock Agent Server for Testing
-FROM node:20-alpine
+FROM node:26-alpine
 
 RUN apk add --no-cache wget
 
diff --git a/infra/docker/Dockerfile.production b/infra/docker/Dockerfile.production
index 426b6a8..0b9d4c7 100644
--- a/infra/docker/Dockerfile.production
+++ b/infra/docker/Dockerfile.production
@@ -7,7 +7,7 @@
 # ============================================================
 # Stage 1: Build
 # ============================================================
-FROM node:22-alpine AS builder
+FROM node:26-alpine AS builder
 
 WORKDIR /app
 
@@ -34,7 +34,7 @@ RUN rm -rf node_modules/.cache \
 # ============================================================
 # Stage 2: Production
 # ============================================================
-FROM node:22-alpine AS production
+FROM node:26-alpine AS production
 
 # Security: Create non-root user
 RUN addgroup -g 1001 -S appgroup \
diff --git a/infra/docker/Dockerfile.resource-crawler b/infra/docker/Dockerfile.resource-crawler
index 69bc0fc..16ee5a9 100644
--- a/infra/docker/Dockerfile.resource-crawler
+++ b/infra/docker/Dockerfile.resource-crawler
@@ -1,7 +1,7 @@
 # Resource Crawler Service Dockerfile
 # Has plugin directory structure
 
-FROM node:20-alpine
+FROM node:26-alpine
 
 RUN apk add --no-cache wget
 
diff --git a/infra/docker/Dockerfile.service b/infra/docker/Dockerfile.service
index 3977952..1ab1457 100644
--- a/infra/docker/Dockerfile.service
+++ b/infra/docker/Dockerfile.service
@@ -1,7 +1,7 @@
 # Agenium Search - Service Dockerfile
 # Used for dns-crawler, normalizer, indexer, search-api
 
-FROM node:20-alpine
+FROM node:26-alpine
 
 # Install wget for healthcheck
 RUN apk add --no-cache wget
diff --git a/infra/docker/Dockerfile.stub b/infra/docker/Dockerfile.stub
index 235de1a..8493696 100644
--- a/infra/docker/Dockerfile.stub
+++ b/infra/docker/Dockerfile.stub
@@ -1,7 +1,7 @@
 # Stub service Dockerfile for Phase 2
 # All services use this until business logic is implemented
 
-FROM node:22-alpine
+FROM node:26-alpine
 
 WORKDIR /app