diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 5b31ed4f..0d552ac7 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1719,6 +1719,7 @@ LSL:
   ace_mode: lsl
   extensions:
   - .lsl
+  - .lslp
   interpreters:
   - lsl
   color: '#3d9970'