diff --git a/packages/cli/src/server/fileWatcher.test.ts b/packages/cli/src/server/fileWatcher.test.ts
index 036a4058a..d2db06b94 100644
--- a/packages/cli/src/server/fileWatcher.test.ts
+++ b/packages/cli/src/server/fileWatcher.test.ts
@@ -23,6 +23,8 @@ describe("shouldWatchProjectFile", () => {
     expect(shouldWatchProjectFile("renders/output.mp4")).toBe(false);
     expect(shouldWatchProjectFile("dist/index.html")).toBe(false);
     expect(shouldWatchProjectFile(".hyperframes/cache.json")).toBe(false);
+    expect(shouldWatchProjectFile(".transcode-cache/proxy.mp4")).toBe(false);
+    expect(shouldWatchProjectFile(".thumbnails/frame.jpg")).toBe(false);
   });
 });
 
diff --git a/packages/cli/src/server/fileWatcher.ts b/packages/cli/src/server/fileWatcher.ts
index 91a8b2354..a73c995e5 100644
--- a/packages/cli/src/server/fileWatcher.ts
+++ b/packages/cli/src/server/fileWatcher.ts
@@ -13,6 +13,8 @@ const WATCHER_EXCLUDED_DIRS = new Set([
   ".git",
   ".hyperframes",
   ".next",
+  ".thumbnails",
+  ".transcode-cache",
   ".vite",
   "build",
   "coverage",