diff --git a/desktop/scripts/desktop-version.test.ts b/desktop/scripts/desktop-version.test.ts
index f46653cc84..4bfc2c0ff1 100644
--- a/desktop/scripts/desktop-version.test.ts
+++ b/desktop/scripts/desktop-version.test.ts
@@ -1,4 +1,4 @@
-import { afterEach, expect, test } from "bun:test";
+import { afterEach, expect, setDefaultTimeout, test } from "bun:test";
 import {
   copyFileSync,
   mkdirSync,
@@ -10,6 +10,13 @@ import {
 import { tmpdir } from "node:os";
 import { join, resolve } from "node:path";
 
+// Each test builds a real git repository and runs desktop-version.ts in a new Bun process, and the
+// hash-ordering test makes commits until one sorts lower, so a test starts tens of git and Bun
+// processes. On the Windows runner, where every process start is slow, that passed the 5-second
+// default and failed "a later internal build orders after an earlier one" with git's exit code
+// null. Nothing here waits on a timer or a network.
+setDefaultTimeout(30_000);
+
 const directories: string[] = [];
 const cargo =
   '[package]\nname = "openbot-desktop"\nversion = "0.0.10"\n\n[dependencies]\nexample = "0.0.10"\n';