diff --git a/.configs/vitest.config.mjs b/.configs/vitest.config.mjs
index b485fa3..483c5d7 100644
--- a/.configs/vitest.config.mjs
+++ b/.configs/vitest.config.mjs
@@ -7,7 +7,7 @@ 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/gitmulti.cli.test.mjs b/tests/gitmulti.cli.test.vitest.mjs
similarity index 92%
rename from tests/gitmulti.cli.test.mjs
rename to tests/gitmulti.cli.test.vitest.mjs
index 001c0d0..61e65b4 100644
--- a/tests/gitmulti.cli.test.mjs
+++ b/tests/gitmulti.cli.test.vitest.mjs
@@ -2,11 +2,11 @@
  * End-to-end characterization of the gitmulti CLI entry point via a real,
  * fully isolated subprocess (spawnSync of `node gitmulti.js <args>`).
  *
- * This complements gitmulti.test.mjs, which drives gitmulti.js in-process for
+ * This complements gitmulti.test.vitest.mjs, which drives gitmulti.js in-process for
  * statement/branch coverage. Two scenarios cannot be driven that way without
  * either mocking `child_process` (which does not work here — commander's
  * internal `require("child_process")` is not reachable by `vi.mock`, see the
- * comment at the top of gitmulti.test.mjs) or letting a real spawn attempt
+ * comment at the top of gitmulti.test.vitest.mjs) or letting a real spawn attempt
  * happen inside the test worker process (which leaks an async `process.exit`
  * call that fires after the test body returns and trips Vitest's
  * unexpected-exit detector). Running the real CLI as a genuine child process
@@ -15,7 +15,7 @@
  *
  * This does not shell out to `git` and never touches a real repository or
  * the filesystem beyond the ENOENT spawn attempt below — gitmulti.js has no
- * git/`.gitmulti` handling of its own yet (see gitmulti.test.mjs's file
+ * git/`.gitmulti` handling of its own yet (see gitmulti.test.vitest.mjs's file
  * banner); the "list" subcommand it declares as its default is meant to be
  * an executable sibling file (`gitmulti-list`) that does not exist in this
  * package, so invoking it is expected, currently, to fail.
diff --git a/tests/gitmulti.test.mjs b/tests/gitmulti.test.vitest.mjs
similarity index 99%
rename from tests/gitmulti.test.mjs
rename to tests/gitmulti.test.vitest.mjs
index 41400b3..ca09a8d 100644
--- a/tests/gitmulti.test.mjs
+++ b/tests/gitmulti.test.vitest.mjs
@@ -35,7 +35,7 @@
  * in-process — no matching flag/command, which falls through to commander's
  * `defaultExecutable` ("list") and really attempts to spawn a `gitmulti-list`
  * executable that does not exist in this package — is characterized instead
- * via a real, fully isolated subprocess in gitmulti.cli.test.mjs, so a failed
+ * via a real, fully isolated subprocess in gitmulti.cli.test.vitest.mjs, so a failed
  * spawn attempt never touches this test's own process.
  */
 import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
diff --git a/tests/run-vitest.mjs b/tests/run-vitest.mjs
index d6c32ba..8dbdb5e 100644
--- a/tests/run-vitest.mjs
+++ b/tests/run-vitest.mjs
@@ -26,7 +26,7 @@ const code = await run({
 	cwd: root,
 	testDir: "tests",
 	vitestConfig: ".configs/vitest.config.mjs",
-	testFilePattern: /\.test\.mjs$/,
+	testFilePattern: /\.test\.vitest\.mjs$/,
 	testPatterns,
 	workers,
 	coverageQuiet,