diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index adfce612..17f4333f 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -271,6 +271,7 @@ Common Lisp:
   extensions:
   - .asd
   - .lsp
+  - .podsl
   - .ny
 
 Coq: