Fix #9550

jupyterlab · Jan 5, 2021 · 3ebecb4 · 3ebecb4
1 parent 0b46ba0
commit 3ebecb4
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/jupyterlab/upgrade_extension.py b/jupyterlab/upgrade_extension.py
@@ -80,7 +80,7 @@ def update_extension(target, interactive=True):
         if name not in data:
             continue
 
-        for (key, value) in data[name].items():
+        for (key, value) in list(data[name].items()):
             if key.startswith('@phosphor/'):
                 has_phosphor = True
                 data[name][key.replace('@phosphor/', '@lumino/')] = value