diff --git a/.gitattributes b/.gitattributes
index d27aedeef..353917aa4 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,4 +1,5 @@
 # Attribute definitions
+# For "linguist-language" values, see https://github.com/github-linguist/linguist/blob/master/lib/linguist/languages.yml
 [attr]adb   linguist-detectable linguist-language=AdBlock
 [attr]json  linguist-detectable linguist-language=jsonc
 [attr]hosts linguist-detectable linguist-language=hosts