diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 014e0201..fe33537e 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -130,6 +130,7 @@ Awk:
   - .gawk
   - .mawk
   - .nawk
+  - .auk
 
 Batchfile:
   type: programming