diff --git a/dev_server/requirements.txt b/dev_server/requirements.txt
index 0b26095..a16bfea 100644
--- a/dev_server/requirements.txt
+++ b/dev_server/requirements.txt
@@ -26,7 +26,7 @@ jupyter==1.0.0
 jupyter-client==5.3.4
 jupyter-console==6.0.0
 jupyter-core==4.6.0
-jupyterlab==1.1.4
+jupyterlab==1.2.21
 jupyterlab-server==1.0.6
 jupytext==1.2.4
 kiwisolver==1.1.0