diff --git a/packages/ast-spec/tsconfig.spec.json b/packages/ast-spec/tsconfig.spec.json
index 0b3ced92edb..659371721f5 100644
--- a/packages/ast-spec/tsconfig.spec.json
+++ b/packages/ast-spec/tsconfig.spec.json
@@ -7,7 +7,7 @@
     "types": ["node", "vitest/globals", "vitest/importMeta"]
   },
   "include": [
-    "vitest.config.mts",
+    "vitest.config.*",
     "package.json",
     "src/**/*.test.ts",
     "src/**/*.spec.ts",
diff --git a/packages/eslint-plugin/tsconfig.spec.json b/packages/eslint-plugin/tsconfig.spec.json
index 91d638a2f9a..9f4b9364dc6 100644
--- a/packages/eslint-plugin/tsconfig.spec.json
+++ b/packages/eslint-plugin/tsconfig.spec.json
@@ -7,7 +7,7 @@
     "types": ["node", "vitest/globals", "vitest/importMeta"]
   },
   "include": [
-    "vitest.config.mts",
+    "vitest.config.*",
     "package.json",
     "src/**/*.test.ts",
     "src/**/*.spec.ts",
diff --git a/packages/integration-tests/tsconfig.spec.json b/packages/integration-tests/tsconfig.spec.json
index d7f954ed0f8..87c9e09ea1b 100644
--- a/packages/integration-tests/tsconfig.spec.json
+++ b/packages/integration-tests/tsconfig.spec.json
@@ -7,7 +7,7 @@
     "types": ["node", "vitest/globals", "vitest/importMeta"]
   },
   "include": [
-    "vitest.config.mts",
+    "vitest.config.*",
     "package.json",
     "src/**/*.test.ts",
     "src/**/*.spec.ts",
diff --git a/packages/rule-schema-to-typescript-types/tsconfig.spec.json b/packages/rule-schema-to-typescript-types/tsconfig.spec.json
index b4ff90ff9db..37b6200ff95 100644
--- a/packages/rule-schema-to-typescript-types/tsconfig.spec.json
+++ b/packages/rule-schema-to-typescript-types/tsconfig.spec.json
@@ -5,7 +5,7 @@
     "resolveJsonModule": true,
     "types": ["vitest/globals", "vitest/importMeta"]
   },
-  "include": ["vitest.config.mts", "package.json", "tests"],
+  "include": ["vitest.config.*", "package.json", "tests"],
   "exclude": ["**/fixtures/**"],
   "references": [
     {
diff --git a/packages/rule-tester/tsconfig.spec.json b/packages/rule-tester/tsconfig.spec.json
index a0429996f53..dc967aa83a9 100644
--- a/packages/rule-tester/tsconfig.spec.json
+++ b/packages/rule-tester/tsconfig.spec.json
@@ -7,7 +7,7 @@
     "types": ["node", "vitest/globals", "vitest/importMeta"]
   },
   "include": [
-    "vitest.config.mts",
+    "vitest.config.*",
     "package.json",
     "src/**/*.test.ts",
     "src/**/*.spec.ts",
diff --git a/packages/scope-manager/tsconfig.spec.json b/packages/scope-manager/tsconfig.spec.json
index 672e3e21a70..c414b0447b3 100644
--- a/packages/scope-manager/tsconfig.spec.json
+++ b/packages/scope-manager/tsconfig.spec.json
@@ -7,7 +7,7 @@
     "types": ["node", "vitest/globals", "vitest/importMeta"]
   },
   "include": [
-    "vitest.config.mts",
+    "vitest.config.*",
     "package.json",
     "src/**/*.test.ts",
     "src/**/*.spec.ts",
diff --git a/packages/type-utils/tsconfig.spec.json b/packages/type-utils/tsconfig.spec.json
index 7ec995aaf7d..e43afdbe654 100644
--- a/packages/type-utils/tsconfig.spec.json
+++ b/packages/type-utils/tsconfig.spec.json
@@ -7,7 +7,7 @@
     "types": ["node", "vitest/globals", "vitest/importMeta"]
   },
   "include": [
-    "vitest.config.mts",
+    "vitest.config.*",
     "package.json",
     "src/**/*.test.ts",
     "src/**/*.spec.ts",
diff --git a/packages/types/tsconfig.spec.json b/packages/types/tsconfig.spec.json
index 872d3c655b2..0bbf682bb3f 100644
--- a/packages/types/tsconfig.spec.json
+++ b/packages/types/tsconfig.spec.json
@@ -5,7 +5,7 @@
     "resolveJsonModule": true,
     "types": ["vitest/globals", "vitest/importMeta"]
   },
-  "include": ["vitest.config.mts", "package.json", "tests"],
+  "include": ["vitest.config.*", "package.json", "tests"],
   "exclude": ["**/fixtures/**"],
   "references": [
     {
diff --git a/packages/typescript-estree/tsconfig.spec.json b/packages/typescript-estree/tsconfig.spec.json
index 39d5f78b4b0..f7886ed8911 100644
--- a/packages/typescript-estree/tsconfig.spec.json
+++ b/packages/typescript-estree/tsconfig.spec.json
@@ -7,7 +7,7 @@
     "types": ["node", "vitest/globals", "vitest/importMeta"]
   },
   "include": [
-    "vitest.config.mts",
+    "vitest.config.*",
     "package.json",
     "src/**/*.test.ts",
     "src/**/*.spec.ts",