diff --git a/.pre-commit-hooks.yaml b/.pre-commit-hooks.yaml
index bc908ed..de9b2d9 100644
--- a/.pre-commit-hooks.yaml
+++ b/.pre-commit-hooks.yaml
@@ -5,4 +5,4 @@
   entry: comment_spell_check
   language: python
   minimum_pre_commit_version: 2.9.2
-  types_or: [python, rst, markdown, ruby, java ]
+  types_or: [python, rst, markdown, ruby, java, c++, c, c# ]
diff --git a/comment_spell_check/comment_spell_check.py b/comment_spell_check/comment_spell_check.py
index e5a793b..686b7e3 100755
--- a/comment_spell_check/comment_spell_check.py
+++ b/comment_spell_check/comment_spell_check.py
@@ -54,7 +54,7 @@
     ".c": "text/x-c++",
     ".hxx": "text/x-c++",
     ".py": "text/x-python",
-    ".ruby": "text/x-ruby",
+    ".rb": "text/x-ruby",
     ".java": "text/x-java-source",
     ".txt": "text/plain",
     ".rst": "text/plain",