diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index ceb126cc..91ba8592 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -748,6 +748,8 @@ Logos:
 Logtalk:
   type: programming
   primary_extension: .lgt
+  extensions:
+  - .logtalk
 
 Lua:
   type: programming