diff --git a/binder/postBuild b/binder/postBuild
index be56c9a480..57cbf98ea9 100644
--- a/binder/postBuild
+++ b/binder/postBuild
@@ -1,6 +1,11 @@
 #!/bin/bash
 set -euo pipefail
 
-python -m pip install -e .
+python -m pip install -e . --force-reinstall
+
+# TODO: remove when it's possible to install nbclassic next to Notebook v7
+# without nbclassic shadowing the v7 endpoints
+python -m pip uninstall nbclassic -y
+
 jlpm && jlpm run build
 jlpm run develop