diff --git a/.github/workflows/ci_tests.yml b/.github/workflows/ci_tests.yml
index a783216..9335463 100644
--- a/.github/workflows/ci_tests.yml
+++ b/.github/workflows/ci_tests.yml
@@ -8,6 +8,10 @@ on:
     - '*'
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -28,7 +32,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install twine wheel jupyter-packaging jupyterlab4
+          pip install twine wheel jupyter-packaging jupyterlab
 
       - name: Build
         run: |