diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 53db94d6..e532aeac 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -226,6 +226,7 @@ C#:
   primary_extension: .cs
   extensions:
   - .csx
+  - .cshtml
 
 C++:
   type: programming