diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 2b81459e..746431c7 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -195,8 +195,10 @@ C++:
   - .H
   - .h++
   - .hh
+  - .hpp
   - .hxx
   - .tcc
+  - .tpp
 
 C-ObjDump:
   type: data