diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index d20b1e9..b22c48e 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -4,6 +4,11 @@ What's new
 
 .. currentmodule:: crystals
 
+Release 1.7.0a
+--------------
+
+* A new indexing algorithm has been integrated (:func:`index_pink`), which is particularly well-suited to serial pink-beam X-ray and electron diffraction indexing (#19). This algorithm is notoriously hard to test; if you find any issues, feel free to `raise an issue <https://github.com/LaurentRDC/crystals/issues/new>`_ on GitHub 
+
 Release 1.6.2
 -------------