diff --git a/packages/eslint-plugin/vitest.config.mts b/packages/eslint-plugin/vitest.config.mts
index ddc038f86b56..dd9986a3c5dc 100644
--- a/packages/eslint-plugin/vitest.config.mts
+++ b/packages/eslint-plugin/vitest.config.mts
@@ -12,6 +12,7 @@ const vitestConfig = mergeConfig(
 
     test: {
       dir: path.join(import.meta.dirname, 'tests'),
+      isolate: false,
       name: packageJson.name.replace('@typescript-eslint/', ''),
       root: import.meta.dirname,
     },