diff --git a/src/__tests__/rewriteDocLinks.test.ts b/src/__tests__/rewriteDocLinks.test.ts
index 7a5f7ced..c0b59138 100644
--- a/src/__tests__/rewriteDocLinks.test.ts
+++ b/src/__tests__/rewriteDocLinks.test.ts
@@ -85,6 +85,18 @@ describe("rewriteRelativeDocLinks", () => {
     );
   });
 
+  it("rewrites reference-style definitions without a title", () => {
+    expect(rewriteRelativeDocLinks("[id]: architecture.md", "hive")).toBe(
+      "[id]: /docs/hive/architecture"
+    );
+  });
+
+  it("leaves non-doc reference-style definitions unchanged", () => {
+    same("[ext]: https://example.com/page");
+    same("[abs]: /docs/hive/architecture");
+    same("[img]: diagram.png");
+  });
+
   it("preserves CommonMark titles", () => {
     expect(rewriteRelativeDocLinks('[x](x.md "Title")', "hive")).toBe(
       '[x](/docs/hive/x "Title")'
diff --git a/src/__tests__/versions.test.ts b/src/__tests__/versions.test.ts
index 6d557dbf..cc23e0a9 100644
--- a/src/__tests__/versions.test.ts
+++ b/src/__tests__/versions.test.ts
@@ -28,6 +28,8 @@ describe("getProjectFromPath", () => {
     ["/docs/rationguard/install", "rationguard"],
     ["/docs/promptargs", "promptargs"],
     ["/docs/dibs", "dibs"],
+    ["/docs/crux", "crux"],
+    ["/docs/crux/getting-started", "crux"],
     ["/docs/spektacular/api", "spektacular"],
   ] as const)("maps %s to project %s", (pathname, id) => {
     expect(getProjectFromPath(pathname).id).toBe(id);