diff --git a/.github/classifier.yml b/.github/classifier.yml
index 8acb000234779c9b941f240b173c6e615a42a7c9..92da2b03f5fb13cd6a9fd0133809b7dc5e092b8d 100644
--- a/.github/classifier.yml
+++ b/.github/classifier.yml
@@ -144,6 +144,7 @@
         explorer-custom: [],
         extension-host: [],
         extensions: [],
+        extensions-development: [ octref ],
         file-decorations: [],
         file-encoding: {
             assignees: [],