diff --git a/libervia/cli/cmd_debug.py b/libervia/cli/cmd_debug.py
index 12d077c7..e76d9a84 100644
--- a/libervia/cli/cmd_debug.py
+++ b/libervia/cli/cmd_debug.py
@@ -59,7 +59,7 @@ class Method(base.CommandBase, BridgeCommon):
         method = getattr(self.host.bridge, self.args.method)
         import inspect
 
-        argspec = inspect.getargspec(method)
+        argspec = inspect.getfullargspec(method)
 
         kwargs = {}
         if "profile_key" in argspec.args: