diff --git a/.configs/vitest.config.mjs b/.configs/vitest.config.mjs
index fe3bc58..40e7dd0 100644
--- a/.configs/vitest.config.mjs
+++ b/.configs/vitest.config.mjs
@@ -9,7 +9,7 @@ const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
 export default defineConfig({
 	root,
 	test: {
-		include: ["tests/**/*.test.mjs"],
+		include: ["tests/**/*.test.vitest.mjs"],
 		exclude: ["node_modules"],
 		environment: "node",
 		testTimeout: 30000,
diff --git a/tests/env-manager.test.mjs b/tests/env-manager.test.vitest.mjs
similarity index 100%
rename from tests/env-manager.test.mjs
rename to tests/env-manager.test.vitest.mjs
diff --git a/tests/run-vitest.mjs b/tests/run-vitest.mjs
index 8f1b2dd..e1bd0e1 100644
--- a/tests/run-vitest.mjs
+++ b/tests/run-vitest.mjs
@@ -41,8 +41,8 @@ const code = await run({
 	cwd: root,
 	testDir: "tests",
 	vitestConfig: ".configs/vitest.config.mjs",
-	// envm uses the plain `*.test.mjs` convention.
-	testFilePattern: /\.test\.mjs$/,
+	// envm uses the CLDMV fleet-wide `*.test.vitest.mjs` convention.
+	testFilePattern: /\.test\.vitest\.mjs$/,
 	testPatterns,
 	workers,
 	coverageQuiet,