diff --git a/Session-Closed-Groups.md b/Session-Closed-Groups.md
index 1cd2336..52817a7 100644
--- a/Session-Closed-Groups.md
+++ b/Session-Closed-Groups.md
@@ -26,6 +26,19 @@ This group pertains mainly to music sociology and music philosophy. Would you li
 
 Contact: _ (05461da15175abe3fdd0ae4f3d8e0c44ec3bff41281e2fd7d2667eb629b6da4461)
 
+
+## GrapheneOS
+Welcome GrapheneOS newbies and experts!
+
+Feel free to share and read news, tips and tricks related to GrapheneOS.
+Off-topic chats will be deleted and members will be warned any illegal content will be immediately deleted and members banned.
+
+Contact: whoami (05ce62d575b31e2b3629fba5b9ae7f92fa33eda2d346e6995e5eb8444d68f5bb13)
+
+see also:
+
+https://grapheneos.org (official GrapheneOS website)
+
 ---