diff --git a/subprojects/extensions-app/data/metainfo/org.gnome.Extensions.metainfo.xml.in b/subprojects/extensions-app/data/metainfo/org.gnome.Extensions.metainfo.xml.in
index e3f0b7a07..16a78ac0f 100644
--- a/subprojects/extensions-app/data/metainfo/org.gnome.Extensions.metainfo.xml.in
+++ b/subprojects/extensions-app/data/metainfo/org.gnome.Extensions.metainfo.xml.in
@@ -15,6 +15,8 @@
   <url type="vcs-browser">https://gitlab.gnome.org/GNOME/gnome-shell/-/tree/HEAD/subprojects/extensions-app</url>
 
   <project_group>GNOME</project_group>
+  <!-- developer_name tag deprecated with Appstream 1.0 -->
+  <developer_name>The GNOME Project</developer_name>
   <developer id="gnome.org">
     <name>The GNOME Project</name>
   </developer>