diff --git a/.github/workflows/fitbot.yml b/.github/workflows/fitbot.yml
index d95b346991..ae4107fcd8 100644
--- a/.github/workflows/fitbot.yml
+++ b/.github/workflows/fitbot.yml
@@ -10,7 +10,7 @@ on:
 env:
   N3FIT_MAXNREP: 20 # total number of replicas to fit
   POSTFIT_NREP: 16 # requested replicas for postfit
-  REFERENCE_SET: NNBOT-a5240b65e-2023-12-12 # reference set for vp
+  REFERENCE_SET: NNBOT-c0f99b7b3-2024-02-28 # reference set for vp
   CONDA_PY: 310
   PYTHONHASHSEED: "0"
 
diff --git a/doc/sphinx/source/releases.rst b/doc/sphinx/source/releases.rst
index 9877f25ef7..7fcfdfdd36 100644
--- a/doc/sphinx/source/releases.rst
+++ b/doc/sphinx/source/releases.rst
@@ -20,6 +20,10 @@ The code is tagged to contextualize the versioning, mark significant
 developments and to mark versions used to produce main results. The
 significant releases since the code was made public are:
 
+`Version 4.0.9 <https://github.com/NNPDF/nnpdf/releases/tag/4.0.9>`_
+    Release for 4.0 N3LO; last release fully backwards-compatible with 4.0 pipeline.
+    4.0 runcards will still work but external tools, and data and theory not used in the 4.0 family of fits will no longer be guaranteed to work from 4.0.10 onwards
+    Last release compatible with the old commondata format and that accepts apfel as evolution code.
 `Version 4.0.8 <https://github.com/NNPDF/nnpdf/releases/tag/4.0.8>`_
     Release for the `QED <https://arxiv.org/abs/2401.08749>`_ and `MHOU <https://arxiv.org/abs/2401.10319>`_ papers.
     It contains the whole set of theories needed for the QED, MHOU and N3LO papers.