diff --git a/packages/eslint-plugin/lib/configs/all.js b/packages/eslint-plugin/lib/configs/all.js
new file mode 100644
index 00000000..75eb488b
--- /dev/null
+++ b/packages/eslint-plugin/lib/configs/all.js
@@ -0,0 +1,10 @@
+const rules = require("../rules");
+
+const allRules = Object.keys(rules).reduce((acc, ruleName) => {
+  acc[`@html-eslint/${ruleName}`] = "error";
+  return acc;
+}, /** @type {Record<string, "error">} */ ({}));
+
+module.exports = {
+  allRules,
+};
diff --git a/packages/eslint-plugin/lib/index.js b/packages/eslint-plugin/lib/index.js
index 0fbb0d0a..658651d8 100644
--- a/packages/eslint-plugin/lib/index.js
+++ b/packages/eslint-plugin/lib/index.js
@@ -3,6 +3,7 @@ const {
   recommendedRules,
   recommendedLegacyRules,
 } = require("./configs/recommended");
+const { allRules } = require("./configs/all");
 const { HTMLLanguage } = require("./languages/html-language");
 const { name, version } = require("../package.json");
 const parser = require("@html-eslint/parser");
@@ -42,6 +43,18 @@ const plugin = {
       },
       rules: recommendedLegacyRules,
     },
+    "flat/all": {
+      plugins: {
+        /** @type {ESLint.Plugin} */
+        get "@html-eslint"() {
+          return plugin;
+        },
+      },
+      languageOptions: {
+        parser,
+      },
+      rules: allRules,
+    },
   },
 };
 
diff --git a/packages/eslint-plugin/tests/configs.test.js b/packages/eslint-plugin/tests/configs.test.js
index 80a49ab5..470d8358 100644
--- a/packages/eslint-plugin/tests/configs.test.js
+++ b/packages/eslint-plugin/tests/configs.test.js
@@ -6,6 +6,7 @@ const RULES_DIR = path.resolve(__dirname, "../lib/rules");
 const RULE_TESTS_DIR = path.resolve(__dirname, "./rules");
 const RULE_DOCS_DIR = path.resolve(__dirname, "../../../docs/rules");
 const { recommendedLegacyRules } = require("../lib/configs/recommended");
+const { allRules } = require("../lib/configs/all");
 
 describe("rules", () => {
   const exportedRuleNames = Object.keys(exportedRules);
@@ -57,4 +58,16 @@ describe("configs", () => {
       expect.arrayContaining(recommendedRules)
     );
   });
+
+  test("all rules should be included in the all config", () => {
+    const allExportedRules = Object.keys(exportedRules).map(
+      (name) => `@html-eslint/${name}`
+    );
+    expect(Object.keys(allRules)).toEqual(
+      expect.arrayContaining(allExportedRules)
+    );
+    expect(allExportedRules).toEqual(
+      expect.arrayContaining(Object.keys(allRules))
+    );
+  });
 });