diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 088710a..6a38a60 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -18,7 +18,7 @@ jobs:
       - name: Setup Node
         uses: actions/setup-node@v4
         with:
-          node-version: '18'
+          node-version: '20'
           check-latest: true
           cache: 'npm'
           cache-dependency-path: |
diff --git a/.github/workflows/npm-update-bot.yml b/.github/workflows/npm-update-bot.yml
index ab5e0fb..1bfa47a 100644
--- a/.github/workflows/npm-update-bot.yml
+++ b/.github/workflows/npm-update-bot.yml
@@ -20,7 +20,7 @@ jobs:
       - name: Setup Node
         uses: actions/setup-node@v4
         with:
-          node-version: '18'
+          node-version: '20'
           check-latest: true
           cache: 'npm'
           cache-dependency-path: |
diff --git a/Dockerfile b/Dockerfile
index fe3ae8d..ee9af98 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,4 @@
-# There's an issue with node:20-alpine.
-# Docker deployment is canceled after 25< minutes.
-
-FROM docker.io/library/node:18-alpine AS build_node_modules
+FROM docker.io/library/node:20-alpine AS build_node_modules
 
 # Copy Web UI
 COPY src/ /app/
@@ -11,7 +8,7 @@ RUN npm ci --omit=dev &&\
 
 # Copy build result to a new image.
 # This saves a lot of disk space.
-FROM docker.io/library/node:18-alpine
+FROM docker.io/library/node:20-alpine
 COPY --from=build_node_modules /app /app
 
 # Move node_modules one directory up, so during development
diff --git a/src/package-lock.json b/src/package-lock.json
index 3e72882..74f4c21 100644
--- a/src/package-lock.json
+++ b/src/package-lock.json
@@ -21,7 +21,7 @@
         "tailwindcss": "^3.4.3"
       },
       "engines": {
-        "node": "18"
+        "node": "20"
       }
     },
     "node_modules/@aashutoshrathi/word-wrap": {
diff --git a/src/package.json b/src/package.json
index d98a388..f835957 100644
--- a/src/package.json
+++ b/src/package.json
@@ -30,6 +30,6 @@
     ]
   },
   "engines": {
-    "node": "18"
+    "node": "20"
   }
 }