diff --git a/postBuild b/postBuild
index 63e98662c37144fe8995466aea29c1df50faf79f..c0eff826d15e014a5d6e36294cd702574caceb39 100644
--- a/postBuild
+++ b/postBuild
@@ -1 +1,2 @@
 jupyter labextension install @jupyter-widgets/jupyterlab-manager
+jupyter labextension install jupyter-matplotlib