diff --git a/CHANGELOG.md b/CHANGELOG.md
index 27ff8270..ecfbac20 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,10 +7,11 @@ Jupytext ChangeLog
 **Fixed**
 - The `rst2md` tests have been fixed by requiring `sphinx<8` ([#1266](https://github.com/mwouts/jupytext/issues/1266))
 - Some dependencies of the JupyterLab extensions were updated ([#1272](https://github.com/mwouts/jupytext/issues/1272), [#1273](https://github.com/mwouts/jupytext/issues/1273), [#1280](https://github.com/mwouts/jupytext/issues/1280), [#1285](https://github.com/mwouts/jupytext/issues/1285), [#1290](https://github.com/mwouts/jupytext/issues/1290))
-- The pre-commit hook is now compatible with log.showsignature=True (#1281). Thanks to [Justin Lecher](https://github.com/jlec) for this fix.
+- The pre-commit hook is now compatible with log.showsignature=True ([#1281](https://github.com/mwouts/jupytext/issues/1281)). Thanks to [Justin Lecher](https://github.com/jlec) for this fix.
 
 **Added**
 - Jupytext is now tested with Python 3.13 ([#1242](https://github.com/mwouts/jupytext/issues/1242)). Thanks to [Jerry James](https://github.com/jamesjer) for the suggested fixes!
+- The extension of a notebook piped into stdin will be taken in the notebook metadata ([#1282](https://github.com/mwouts/jupytext/issues/1282))
 
 
 1.16.4 (2024-07-12)
diff --git a/jupyterlab/packages/jupyterlab-jupytext-extension/CHANGELOG.md b/jupyterlab/packages/jupyterlab-jupytext-extension/CHANGELOG.md
index 3a7c3316..3716cefa 100644
--- a/jupyterlab/packages/jupyterlab-jupytext-extension/CHANGELOG.md
+++ b/jupyterlab/packages/jupyterlab-jupytext-extension/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 1.4.3+dev
+
+Some dependencies of the JupyterLab extensions were updated ([#1272](https://github.com/mwouts/jupytext/issues/1272), [#1273](https://github.com/mwouts/jupytext/issues/1273), [#1280](https://github.com/mwouts/jupytext/issues/1280), [#1285](https://github.com/mwouts/jupytext/issues/1285), [#1290](https://github.com/mwouts/jupytext/issues/1290))
+
 # 1.4.3 (2024-05-05)
 
 - JupyterLab's dependency `ejs` was updated from 3.1.9 to 3.1.10 ([#1231](https://github.com/mwouts/jupytext/issues/1231))