diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4df7b237b..45e8a50b3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,6 +30,11 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  comment-pr:
+    permissions:
+      pull-requests: write
+    uses: ./.github/workflows/step_comment-pr.yml
+
   pre-commit:
     uses: ./.github/workflows/step_pre-commit.yml
 
@@ -54,7 +59,7 @@ jobs:
     uses: ./.github/workflows/step_tests-ui.yml
 
   build:
-    needs: [test-pip, test-conda, test-ui]
+    needs: [test-pip, test-conda, test-unit-functional-integration, test-ui]
     uses: ./.github/workflows/step_build.yml
     with:
       upload: ${{ inputs.upload-build-artifacts || false }}
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 0f3078fcb..012783294 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -3,8 +3,8 @@ on:
   push:
     tags:
       - "v[0-9]+.[0-9]+.[0-9]+"
-      - "v[0-9]+.[0-9]+.[0-9]+-rc[0-9]+"
-      - "v[0-9]+.[0-9]+.[0-9]+-dev[0-9]+"
+      - "v[0-9]+.[0-9]+.[0-9]+rc[0-9]+"
+      - "v[0-9]+.[0-9]+.[0-9]+dev[0-9]+"
 
 jobs:
   pre-commit:
@@ -18,12 +18,20 @@ jobs:
     needs: [ codeql ]
     uses: ./.github/workflows/step_tests-pip.yml
 
+  test-unit-functional-integration:
+    needs: [ codeql ]
+    uses: ./.github/workflows/step_test_unit_functional.yml
+
   test-conda:
     needs: [ codeql ]
     uses: ./.github/workflows/step_tests-conda.yml
 
+  test-ui:
+    needs: [ codeql ]
+    uses: ./.github/workflows/step_tests-ui.yml
+
   build:
-    needs: [ test-pip, test-conda ]
+    needs: [ test-pip, test-conda, test-unit-functional-integration, test-ui ]
     uses: ./.github/workflows/step_build.yml
 
   publish:
diff --git a/.github/workflows/step_comment-pr.yml b/.github/workflows/step_comment-pr.yml
new file mode 100644
index 000000000..38d06b57b
--- /dev/null
+++ b/.github/workflows/step_comment-pr.yml
@@ -0,0 +1,29 @@
+name: comment-pr
+run-name: Comment PR
+
+on:
+  workflow_call:
+
+jobs:
+  comment-pr:
+    runs-on: ubuntu-latest
+    name: Comment PR
+    if: github.event_name == 'pull_request'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Comment PR
+        uses: thollander/actions-comment-pull-request@v2
+        with:
+          message: |
+            Thank you for making this pull request.
+
+            Did you know? You can try it on Binder: [![Binder:lab](https://img.shields.io/badge/binder-jupyterlab-0172B2.svg)](https://mybinder.org/v2/gh/${{ github.repository }}/${{ github.head_ref }}?urlpath=lab/tree/demo/get_started.ipynb) or [![Binder:notebook](https://img.shields.io/badge/binder-notebook-0172B2.svg)](https://mybinder.org/v2/gh/${{ github.repository }}/${{ github.head_ref }}?filepath=demo).
+
+            Also, the version of Jupytext developed in this PR can be installed with `pip`:
+            ```
+            pip install git+https://github.com/${{ github.repository }}.git@${{ github.head_ref }}
+            ```
+            (this requires `nodejs`, see more at [Developing Jupytext](https://jupytext.readthedocs.io/en/latest/developing.html))
+          comment_tag: binder_link
diff --git a/README.md b/README.md
index 6f33cfb5e..62ac115a3 100755
--- a/README.md
+++ b/README.md
@@ -10,8 +10,8 @@
 [![Conda Version](https://img.shields.io/conda/vn/conda-forge/jupytext.svg)](https://anaconda.org/conda-forge/jupytext)
 [![Pypi](https://img.shields.io/pypi/v/jupytext.svg)](https://pypi.python.org/pypi/jupytext)
 [![pyversions](https://img.shields.io/pypi/pyversions/jupytext.svg)](https://pypi.python.org/pypi/jupytext)
-[![Binder:notebook](https://img.shields.io/badge/binder-notebook-0172B2.svg)](https://mybinder.org/v2/gh/mwouts/jupytext/main?filepath=demo)
 [![Binder:lab](https://img.shields.io/badge/binder-jupyterlab-0172B2.svg)](https://mybinder.org/v2/gh/mwouts/jupytext/main?urlpath=lab/tree/demo/get_started.ipynb)
+[![Binder:notebook](https://img.shields.io/badge/binder-notebook-0172B2.svg)](https://mybinder.org/v2/gh/mwouts/jupytext/main?filepath=demo)
 [![launch - renku](https://renkulab.io/renku-badge.svg)](https://renkulab.io/projects/best-practices/jupytext/sessions/new?autostart=1)
 [![](https://img.shields.io/badge/YouTube-JupyterCon%202020-red.svg)](https://www.youtube.com/watch?v=SDYdeVfMh48)
 
diff --git a/binder/requirements.txt b/binder/requirements.txt
index 6107d84ec..426bdd1fa 100644
--- a/binder/requirements.txt
+++ b/binder/requirements.txt
@@ -1,9 +1,8 @@
 jupyterlab>=4
+notebook>=7
 plotly
 matplotlib
 wordcloud
 pandas
 wbdata
 bash_kernel
-# https://github.com/mwouts/jupytext/issues/1051
-nbclassic>=0.5.5
diff --git a/docs/developing.md b/docs/developing.md
index 5c78aa2a6..05e3e2ce0 100644
--- a/docs/developing.md
+++ b/docs/developing.md
@@ -7,7 +7,12 @@ If you want to test a feature that has been integrated in `main` but not deliver
 pip install git+https://github.com/mwouts/jupytext.git
 ```
 
-If you want only to build Jupytext core (e.g. not the JupyterLab extension) you can prefix the
+The above requires `node`. You can install it with e.g.
+```
+conda install 'nodejs>=20' -c conda-forge
+```
+
+Alternatively you can build only Jupytext core (e.g. skip the JupyterLab extension). To do so, prefix the
 above with `HATCH_BUILD_HOOKS_ENABLE=false`.
 
 Finally, if you want to test a development branch, use