diff --git a/pweave/processors/jupyter.py b/pweave/processors/jupyter.py
index 6211bfc..d3fabf0 100644
--- a/pweave/processors/jupyter.py
+++ b/pweave/processors/jupyter.py
@@ -120,6 +120,8 @@ def run_cell(self, src):
                 continue
             elif msg_type.startswith('comm'):
                 continue
+            elif msg_type == 'execute_reply':
+                continue
 
             try:
                 out = output_from_msg(msg)