diff --git a/contrib/gitian-signing/keys.txt b/contrib/gitian-signing/keys.txt
index ed61283e4..e2f919782 100644
--- a/contrib/gitian-signing/keys.txt
+++ b/contrib/gitian-signing/keys.txt
@@ -1,3 +1,4 @@
 629D7E5DDDA0512BD5860F2C5D7922BBD649C4A7 deadalnix@bitcoinabc.org
 3BB16D00D9A6D281591BDC76E4486356E7A81D2C jasonbcox@bitcoinabc.org
 B93D6215ED031A3384F5D3209C0D84E61FD02C16 fabien@bitcoinabc.org
+923C3E0FF2CDE340C7618B491EF82E337380E461 marco@bitcoinabc.org