diff --git a/environment.yml b/.binder/environment.yml
similarity index 75%
rename from environment.yml
rename to .binder/environment.yml
index ae79d1fb..7cba1b8a 100644
--- a/environment.yml
+++ b/.binder/environment.yml
@@ -2,6 +2,8 @@ name: ipympl
 channels:
   - conda-forge
 dependencies:
+  - yarn
   - numpy
   - jupyterlab>=3
   - matplotlib-base>=2.2.2
+  - jupyter-packaging=0.7
diff --git a/.binder/postBuild b/.binder/postBuild
new file mode 100644
index 00000000..e4a34213
--- /dev/null
+++ b/.binder/postBuild
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+python -m pip install -vvv -e .
+jupyter labextension develop . --overwrite