diff --git a/CHANGES/v2.5.md b/CHANGES/v2.5.md
index fab825ac53b10d9c3ef01c3e4b95e9e933ee44a6..64ee174813ab56e7118e4565359d611b4b9ea304 100644
--- a/CHANGES/v2.5.md
+++ b/CHANGES/v2.5.md
@@ -189,3 +189,13 @@ For users:
     but it is not necessary if the `Plumed` object gets correctly collected by Python.
   - `Plumed` object can be used in context managers (e.g. `with plumed.Plumed() as p:`).
 - Precompiled binaries are available on Anaconda cloud on the [conda-forge channel](https://anaconda.org/conda-forge/plumed).
+
+## Version 2.5.2
+
+For users:
+- Python module:
+  - Set `language_level` for cython to the actually used language level.
+  - Force using cython when compiling from source. Still using the pre-generated cpp file
+    when installing from PyPI, to avoid cython dependency.
+  - Using python 2 to create the cpp file uploaded on PyPI (this will change to python 3 in 2.6, see \issue{502}).
+