diff --git a/.github/workflows/deploy-demo.yml b/.github/workflows/deploy-demo.yml
index cdbcd40..1be735a 100644
--- a/.github/workflows/deploy-demo.yml
+++ b/.github/workflows/deploy-demo.yml
@@ -21,10 +21,12 @@ jobs:
         include:
           - ionic-major: 9
             ionic-version: 9.0.0
+            eslint-rules-version: 22.0.0
             configuration: production
             wrangler-args: '--env=""'
           - ionic-major: 8
             ionic-version: 8.8.19
+            eslint-rules-version: 21.3.0
             configuration: production,ionic8
             wrangler-args: '--env ionic8'
     name: Deploy Ionic ${{ matrix.ionic-major }} demo
@@ -45,7 +47,7 @@ jobs:
 
       - run: npm ci
         working-directory: ./demo
-      - run: npm install --no-save --package-lock=false @ionic/angular@${{ matrix.ionic-version }} @ionic/core@${{ matrix.ionic-version }}
+      - run: npm install --no-save --package-lock=false @ionic/angular@${{ matrix.ionic-version }} @ionic/core@${{ matrix.ionic-version }} @rdlabo/eslint-plugin-rules@${{ matrix.eslint-rules-version }}
         working-directory: ./demo
       - run: npm run build -- --configuration=${{ matrix.configuration }}
         working-directory: ./demo
diff --git a/.github/workflows/e2e-main.yml b/.github/workflows/e2e-main.yml
index fe4607e..e8a81bc 100644
--- a/.github/workflows/e2e-main.yml
+++ b/.github/workflows/e2e-main.yml
@@ -38,7 +38,7 @@ jobs:
       - run: npm ci
         working-directory: './demo'
       - if: matrix.ionic-major == 8
-        run: npm install --no-save --package-lock=false @ionic/angular@${{ matrix.ionic-version }} @ionic/core@${{ matrix.ionic-version }}
+        run: npm install --no-save --package-lock=false @ionic/angular@${{ matrix.ionic-version }} @ionic/core@${{ matrix.ionic-version }} @rdlabo/eslint-plugin-rules@21.3.0
         working-directory: './demo'
 
       - name: Run Playwright tests
diff --git a/.github/workflows/e2e-pull_request.yml b/.github/workflows/e2e-pull_request.yml
index 6bbfc27..40e0759 100644
--- a/.github/workflows/e2e-pull_request.yml
+++ b/.github/workflows/e2e-pull_request.yml
@@ -44,7 +44,7 @@ jobs:
       - run: npm ci
         working-directory: './demo'
       - if: matrix.ionic-major == 8
-        run: npm install --no-save --package-lock=false @ionic/angular@${{ matrix.ionic-version }} @ionic/core@${{ matrix.ionic-version }}
+        run: npm install --no-save --package-lock=false @ionic/angular@${{ matrix.ionic-version }} @ionic/core@${{ matrix.ionic-version }} @rdlabo/eslint-plugin-rules@21.3.0
         working-directory: './demo'
 
       - name: Run Playwright tests
diff --git a/.github/workflows/update-screenshots.yml b/.github/workflows/update-screenshots.yml
index 7f60d7d..b57c56b 100644
--- a/.github/workflows/update-screenshots.yml
+++ b/.github/workflows/update-screenshots.yml
@@ -106,7 +106,7 @@ jobs:
         run: npm run build
 
       - name: Install Ionic 8 in demo
-        run: npm install --no-save --package-lock=false @ionic/angular@8.8.19 @ionic/core@8.8.19
+        run: npm install --no-save --package-lock=false @ionic/angular@8.8.19 @ionic/core@8.8.19 @rdlabo/eslint-plugin-rules@21.3.0
         working-directory: './demo'
 
       - name: Verify Ionic 8 against the same screenshots
diff --git a/demo/eslint.config.js b/demo/eslint.config.js
index 07fd6bc..5d95372 100644
--- a/demo/eslint.config.js
+++ b/demo/eslint.config.js
@@ -3,6 +3,10 @@ const eslint = require("@eslint/js");
 const tseslint = require("typescript-eslint");
 const angular = require("angular-eslint");
 const rdlabo = require('@rdlabo/eslint-plugin-rules');
+// The Ionic 8 matrix uses plugin v21; Ionic 9 uses its renamed v22 rule.
+const ionicStandaloneRule = 'prefer-ionic-standalone' in rdlabo.rules
+  ? '@rdlabo/rules/prefer-ionic-standalone'
+  : '@rdlabo/rules/deny-import-from-ionic-module';
 
 module.exports = tseslint.config(
   {
@@ -29,7 +33,7 @@ module.exports = tseslint.config(
       "@angular-eslint/directive-selector": "off",
       "@angular-eslint/component-selector": "off",
       "@angular-eslint/no-empty-lifecycle-method": "off",
-      '@rdlabo/rules/deny-import-from-ionic-module': 'error',
+      [ionicStandaloneRule]: 'error',
       '@rdlabo/rules/implements-ionic-lifecycle': 'error',
       '@rdlabo/rules/deny-soft-private-modifier': 'error',
       '@rdlabo/rules/signal-use-as-signal': 'error',
@@ -48,5 +52,12 @@ module.exports = tseslint.config(
     rules: {
       '@rdlabo/rules/ionic-attr-type-check': 'error',
     },
+  },
+  {
+    // These replacement entry points deliberately bridge Ionic 8 and 9 imports.
+    files: ["src/ionic/ionic.ts", "src/ionic/ionic.v8.ts"],
+    rules: {
+      [ionicStandaloneRule]: "off",
+    },
   }
 );
diff --git a/demo/package-lock.json b/demo/package-lock.json
index ad4154e..5f8f037 100644
--- a/demo/package-lock.json
+++ b/demo/package-lock.json
@@ -35,9 +35,9 @@
         "@capacitor/cli": "^8.0.0",
         "@eslint/js": "^9.39.4",
         "@ionic/angular-toolkit": "^12.0.0",
-        "@ionic/core": "8.8.19",
+        "@ionic/core": "9.0.0",
         "@playwright/test": "1.58.2",
-        "@rdlabo/eslint-plugin-rules": "^21.0.0",
+        "@rdlabo/eslint-plugin-rules": "^22.0.0",
         "angular-eslint": "21.4.0",
         "eslint": "^9.39.4",
         "eslint-plugin-import": "^2.29.1",
@@ -2716,20 +2716,6 @@
         "url": "https://github.com/chalk/strip-ansi?sponsor=1"
       }
     },
-    "node_modules/@ionic/angular/node_modules/@ionic/core": {
-      "version": "9.0.0",
-      "resolved": "https://registry.npmjs.org/@ionic/core/-/core-9.0.0.tgz",
-      "integrity": "sha512-ouHmLIdyP0vTV0PK/kj0QNtQTcDjyoWi2vKRaCkwj0xY3oU9qq3lB0N6w3Cm93ol0inBuXgn3/IN71BTp88c+g==",
-      "license": "MIT",
-      "dependencies": {
-        "@stencil/core": "^4.43.5",
-        "ionicons": "^8.1.0",
-        "tslib": "^2.1.0"
-      },
-      "engines": {
-        "node": ">= 16"
-      }
-    },
     "node_modules/@ionic/cli-framework-output": {
       "version": "2.2.8",
       "resolved": "https://registry.npmjs.org/@ionic/cli-framework-output/-/cli-framework-output-2.2.8.tgz",
@@ -2746,44 +2732,19 @@
       }
     },
     "node_modules/@ionic/core": {
-      "version": "8.8.19",
-      "resolved": "https://registry.npmjs.org/@ionic/core/-/core-8.8.19.tgz",
-      "integrity": "sha512-eAAKZi/qR0U44OxH3MXAyoyLxTl1AeQCoOWvGdzywKbpl/JTVlGnfZJCiJGTmXszQlRsNXsl7fMDOvpsOtf6sQ==",
-      "dev": true,
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/@ionic/core/-/core-9.0.0.tgz",
+      "integrity": "sha512-ouHmLIdyP0vTV0PK/kj0QNtQTcDjyoWi2vKRaCkwj0xY3oU9qq3lB0N6w3Cm93ol0inBuXgn3/IN71BTp88c+g==",
       "license": "MIT",
       "dependencies": {
-        "@stencil/core": "4.43.5",
-        "ionicons": "^8.0.13",
+        "@stencil/core": "^4.43.5",
+        "ionicons": "^8.1.0",
         "tslib": "^2.1.0"
       },
       "engines": {
         "node": ">= 16"
       }
     },
-    "node_modules/@ionic/core/node_modules/@stencil/core": {
-      "version": "4.43.5",
-      "resolved": "https://registry.npmjs.org/@stencil/core/-/core-4.43.5.tgz",
-      "integrity": "sha512-cgWD+GeuvJpTe1WQn40p02+BJ2j0j1YJ17GdkF2qKIQ23s2e3Zivq5yISXS3dcuV6oUJFN93jprdk+nk/sq99Q==",
-      "dev": true,
-      "license": "MIT",
-      "bin": {
-        "stencil": "bin/stencil"
-      },
-      "engines": {
-        "node": ">=16.0.0",
-        "npm": ">=7.10.0"
-      },
-      "optionalDependencies": {
-        "@rollup/rollup-darwin-arm64": "4.44.0",
-        "@rollup/rollup-darwin-x64": "4.44.0",
-        "@rollup/rollup-linux-arm64-gnu": "4.44.0",
-        "@rollup/rollup-linux-arm64-musl": "4.44.0",
-        "@rollup/rollup-linux-x64-gnu": "4.44.0",
-        "@rollup/rollup-linux-x64-musl": "4.44.0",
-        "@rollup/rollup-win32-arm64-msvc": "4.44.0",
-        "@rollup/rollup-win32-x64-msvc": "4.44.0"
-      }
-    },
     "node_modules/@ionic/utils-array": {
       "version": "2.1.6",
       "resolved": "https://registry.npmjs.org/@ionic/utils-array/-/utils-array-2.1.6.tgz",
@@ -4168,9 +4129,9 @@
       }
     },
     "node_modules/@rdlabo/eslint-plugin-rules": {
-      "version": "21.3.0",
-      "resolved": "https://registry.npmjs.org/@rdlabo/eslint-plugin-rules/-/eslint-plugin-rules-21.3.0.tgz",
-      "integrity": "sha512-EjCDLpsbbd1NXmel4h4qKw/Z+l1qS/6BB//zIlF/9ia0ugHApcdB93J7uGrouDpE0qdZ4iiU6KyKX99Tqe4whw==",
+      "version": "22.0.0",
+      "resolved": "https://registry.npmjs.org/@rdlabo/eslint-plugin-rules/-/eslint-plugin-rules-22.0.0.tgz",
+      "integrity": "sha512-xqtgbzcP6HKRsyCmpINvsRZod+ZlF/vj1JgKZDFuKlrxZxgsm7yrRiDqUFiizrNt6CgG8wyW1g6dlvznIqlw3g==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -4180,8 +4141,9 @@
         "node": ">=20.0.0"
       },
       "peerDependencies": {
-        "@angular-eslint/template-parser": ">=21.0.0 <22.0.0",
-        "@ionic/core": ">=8.0.0 <9.0.0",
+        "@angular-eslint/template-parser": ">=21.0.0 <23.0.0",
+        "@ionic/angular": ">=9.0.0 <10.0.0",
+        "@ionic/core": ">=9.0.0 <10.0.0",
         "@typescript-eslint/utils": ">=8.33.0 <9.0.0",
         "eslint": ">=9.0.0"
       },
@@ -4189,6 +4151,9 @@
         "@angular-eslint/template-parser": {
           "optional": true
         },
+        "@ionic/angular": {
+          "optional": true
+        },
         "@ionic/core": {
           "optional": true
         }
diff --git a/demo/package.json b/demo/package.json
index 2160bcd..1131478 100644
--- a/demo/package.json
+++ b/demo/package.json
@@ -51,9 +51,9 @@
     "@capacitor/cli": "^8.0.0",
     "@eslint/js": "^9.39.4",
     "@ionic/angular-toolkit": "^12.0.0",
-    "@ionic/core": "8.8.19",
+    "@ionic/core": "9.0.0",
     "@playwright/test": "1.58.2",
-    "@rdlabo/eslint-plugin-rules": "^21.0.0",
+    "@rdlabo/eslint-plugin-rules": "^22.0.0",
     "angular-eslint": "21.4.0",
     "eslint": "^9.39.4",
     "eslint-plugin-import": "^2.29.1",