diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index f9ee33e..b95eb85 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -42,7 +42,7 @@ jobs:
     strategy:
       matrix:
         eslint: [6]
-        node: [8, 10, 12, 14, 16, 18]
+        node: [12.22.0, 12, 14.17.0, 14, 16, 18]
         os: [ubuntu-latest]
         include:
           # On other platforms
@@ -54,7 +54,7 @@ jobs:
             node: 18
           # On the minimum supported ESLint/Node.js version
           - eslint: 6.6.0
-            node: 8.10.0
+            node: 12.22.0
             os: ubuntu-latest
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/README.md b/README.md
index e74a547..85613b9 100644
--- a/README.md
+++ b/README.md
@@ -16,8 +16,8 @@ npm install --save-dev eslint @eslint-community/eslint-plugin-mysticatea
 
 ### Requirements
 
-- Node.js `^8.10.0` or newer versions.
-- ESLint `^6.3.0` or newer versions.
+- Node.js `^12.22.0 || ^14.17.0 || >=16.0.0` or newer versions.
+- ESLint `^6.6.0` or newer versions.
 
 ## 📖 Usage
 
diff --git a/package.json b/package.json
index e636c4c..46cf8a5 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "version": "0.0.0-semantically-released",
   "description": "Additional ESLint rules.",
   "engines": {
-    "node": ">=8.10.0"
+    "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
   },
   "main": "index.js",
   "files": [
@@ -28,12 +28,12 @@
     "eslint": "^6.8.0",
     "fs-extra": "^8.1.0",
     "globals": "^12.4.0",
-    "mocha": "^6.2.3",
+    "mocha": "^9.2.2",
     "npm-run-all": "^4.1.5",
-    "nyc": "^14.1.1",
+    "nyc": "^15.1.0",
     "opener": "^1.5.2",
     "rimraf": "^3.0.2",
-    "typescript": "^3.9.10"
+    "typescript": "^4.8.4"
   },
   "scripts": {
     "clean": "rimraf .nyc_output coverage",