diff --git a/.github/workflows/build_jlext.yml b/.github/workflows/build_jlext.yml
index f53ad3c..32b04db 100644
--- a/.github/workflows/build_jlext.yml
+++ b/.github/workflows/build_jlext.yml
@@ -68,7 +68,7 @@ jobs:
         run: |
           set -eux
   
-          pip install build
+          jlpm run build
           python -m build
           pip uninstall -y "${{ inputs.extension-name }}" jupyterlab