diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index ba7d1ddb..f934e840 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1159,7 +1159,13 @@ Shell:
   primary_extension: .sh
   filenames:
   - .zsh
+  - bash_logout
+  - bash_profile
   - bashrc
+  - zlogin
+  - zlogout
+  - zshenv
+  - zprofile
   - zshrc
 
 Smalltalk: