diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 8409337b..ddb18e78 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -3441,6 +3441,7 @@ TypeScript:
   - ts
   extensions:
   - .ts
+  - .tsx
   tm_scope: source.ts
   ace_mode: typescript