diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 33b2f003..fa9a0a93 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -715,6 +715,8 @@ Shell:
   extensions:
   - .bash
   - .sh
+  - .zsh
+  - .bash
   filenames:
   - .bash_profile
   - .bashrc