diff --git a/.github/workflows/ci.js.yml b/.github/workflows/ci.js.yml
index a4cd4faf..6ae6c8cb 100644
--- a/.github/workflows/ci.js.yml
+++ b/.github/workflows/ci.js.yml
@@ -9,14 +9,14 @@ on:
 
 jobs:
   precheck:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
 
     steps:
       - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5
-      - name: Use Node.js LTS (16.x)
+      - name: Use Node.js LTS (24.x)
         uses: actions/setup-node@v1
         with:
-          node-version: 16.x
+          node-version: 24.x
 
       - name: Install project dependencies
         run: yarn install --frozen-lockfile --ignore-scripts
@@ -25,11 +25,11 @@ jobs:
         run: yarn lint
 
   unit_tests:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
 
     strategy:
       matrix:
-        node-version: [14.x, 16.x]
+        node-version: [24.x, 26.x]
 
     steps:
       - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5
@@ -48,7 +48,7 @@ jobs:
         run: yarn test:e2e
 
   smoke_tests:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
       - name: Checkout code
         uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
diff --git a/.github/workflows/pr.ci.js.yml b/.github/workflows/pr.ci.js.yml
index f2d9678f..2ea0ac94 100644
--- a/.github/workflows/pr.ci.js.yml
+++ b/.github/workflows/pr.ci.js.yml
@@ -7,16 +7,16 @@ on: pull_request
 
 jobs:
   precheck:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
 
     steps:
       - name: Checkout PR
         uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5
 
-      - name: Use Node.js LTS (16.x)
+      - name: Use Node.js LTS (24.x)
         uses: actions/setup-node@v1
         with:
-          node-version: 16.x
+          node-version: 24.x
 
       - name: Install project dependencies
         run: yarn install --frozen-lockfile --ignore-scripts
@@ -24,12 +24,12 @@ jobs:
       - name: Run exercism/javascript ci precheck (lint code)
         run: yarn lint
 
-  unit_tests:
-    runs-on: ubuntu-24.04
+  ci:
+    runs-on: ubuntu-26.04
 
     strategy:
       matrix:
-        node-version: [14.x, 16.x]
+        node-version: [24.x, 26.x]
 
     steps:
       - name: Checkout PR
@@ -50,7 +50,7 @@ jobs:
         run: yarn test:e2e
 
   smoke_tests:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     steps:
       - name: Checkout code
         uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
diff --git a/Dockerfile b/Dockerfile
index 28b6c5d3..9b0cf973 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,5 @@
-FROM node:lts-alpine3.23@sha256:d1b3b4da11eefd5941e7f0b9cf17783fc99d9c6fc34884a665f40a06dbdfc94f AS builder
+# sha256:a0b9bf06e4e6193cf7a0f58816cc935ff8c2a908f81e6f1a95432d679c54fbfd => node:24.18.0-alpine3.24
+FROM node:lts-alpine@sha256:a0b9bf06e4e6193cf7a0f58816cc935ff8c2a908f81e6f1a95432d679c54fbfd AS builder
 
 # Install SSL ca certificates
 RUN apk update && apk add ca-certificates
@@ -17,7 +18,7 @@ RUN yarn install
 RUN yarn install --production --modules-folder './production_node_modules'
 
 # Build a minimal and secured container
-FROM node:lts-alpine3.23@sha256:d1b3b4da11eefd5941e7f0b9cf17783fc99d9c6fc34884a665f40a06dbdfc94f
+FROM node:lts-alpine@sha256:a0b9bf06e4e6193cf7a0f58816cc935ff8c2a908f81e6f1a95432d679c54fbfd
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 COPY --from=builder /etc/passwd /etc/passwd
 COPY --from=builder /javascript-analyzer/package.json /opt/analyzer/package.json