Fix mass perturbation to dH/dlambda

[alexxy/gromacs.git] / docs / release-notes / 2021 / 2021.1.rst

diff --git a/docs/release-notes/2021/2021.1.rst b/docs/release-notes/2021/2021.1.rst
index d76f9fcd4a95f935d460d7cb662de1038954c9f8..f5a75dfc4dec89938950b8c8b2b7ce576113a006 100644 (file)
--- a/docs/release-notes/2021/2021.1.rst
+++ b/docs/release-notes/2021/2021.1.rst
@@ -25,6 +25,15 @@ after the call that uses the sites. Now it should work, but we have not tested t
 
 :issue:`3866`
 
+Fix mass perturbation to dH/dlambda
+"""""""""""""""""""""""""""""""""""
+
+The contribution for perturbed mass was missing in dH/dlambda.
+Note that this contribution was not missing from the foreign energy
+differences used for the Bennett acceptance ratio method.
+
+:issue:`3943`
+
 Fixes for ``gmx`` tools
 ^^^^^^^^^^^^^^^^^^^^^^^