diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0d884d4..5151c16 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -28,6 +28,8 @@ jobs:
         # python -m pip install -e .
         jlpm install
         jlpm build
+        jlpm build:prod
+        jupyter lab build
 
     - name: Lint the extension
       run: |
diff --git a/binder/postBuild b/binder/postBuild
index 40715f4..a905295 100755
--- a/binder/postBuild
+++ b/binder/postBuild
@@ -35,6 +35,7 @@ _("mkdir", "-p", ".git/hooks")
 _("python", "-m", "pip", "install", "-e", ".")
 _("jlpm", "install")
 _("jlpm", "build:dev:prod")
+_("jupyter", "lab", "build")
 os.chdir(cwd)
 
 # verify the environment is self-consistent before even starting