diff --git a/libs/gl-testing/gltesting/utils.py b/libs/gl-testing/gltesting/utils.py
index faa3dfab7..07ad004e2 100644
--- a/libs/gl-testing/gltesting/utils.py
+++ b/libs/gl-testing/gltesting/utils.py
@@ -38,8 +38,12 @@ def get_node_version(self):
 
 
 class Network(Enum):
-    """Supported networks."""
+    """Supported networks.
+
+    Matches the enum in the `bitcoin::Network` rust code.
+    """
 
     BITCOIN = 0
     TESTNET = 1
-    REGTEST = 2
+    SIGNET = 2
+    REGTEST = 3