diff --git a/binder/postBuild b/binder/postBuild
index afc1a01756..e983a61a1b 100644
--- a/binder/postBuild
+++ b/binder/postBuild
@@ -1,7 +1,5 @@
 #!/bin/bash
 set -euo pipefail
 
-python -m pip install -e . --force-reinstall
-
-jlpm && jlpm run build
-jlpm run develop
+python -m pip install -e ".[dev,test]"
+jlpm develop