diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index ae0323b891b..bb2bc402a63 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -2294,6 +2294,11 @@
   joko = {
     email = "ioannis.koutras@gmail.com";
     github = "jokogr";
+    keys = [{
+      # compare with https://keybase.io/joko
+      longkeyid = "rsa2048/0x85EAE7D9DF56C5CA";
+      fingerprint = "B154 A8F9 0610 DB45 0CA8  CF39 85EA E7D9 DF56 C5CA";
+    }];
     name = "Ioannis Koutras";
   };
   jonafato = {