1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/logging/opentracing.py b/synapse/logging/opentracing.py
index ab586c318c..0538350f38 100644
--- a/synapse/logging/opentracing.py
+++ b/synapse/logging/opentracing.py
@@ -791,7 +791,7 @@ def tag_args(func):
 
     @wraps(func)
     def _tag_args_inner(*args, **kwargs):
-        argspec = inspect.getargspec(func)
+        argspec = inspect.getfullargspec(func)
         for i, arg in enumerate(argspec.args[1:]):
             set_tag("ARG_" + arg, args[i])
         set_tag("args", args[len(argspec.args) :])