diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1b86dbb..a4b14df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # SGTPy Changelog
 
+## v0.0.20
+* Extra constraint to prevent the association non-bonded sites solver to return values bigger than ones.
+* Phase equilibrium solvers now check if the computed fugacity and volume root are a number. If not, these two are recomputed without using the previous solution as an initial guess, in this case the initial volume root is generated using Topliss method.
 
 ## v0.0.19
 * The SAFT-gamma-Mie database has been updated to include recent parameters of the following articles: [Febra et al. (2021)](https://doi.org/10.1016/j.fluid.2021.113002), [Wehbe et al. (2022)](https://doi.org/10.1080/00268976.2023.2197712), [Perdomo et al. (2023)](https://doi.org/10.1016/j.fluid.2022.113635), [Valsecchi et al. (2024)](https://doi.org/10.1016/j.fluid.2023.113952) and [Bernet et al. (2024)](https://doi.org/10.1021/acs.jced.3c00358).
diff --git a/setup.py b/setup.py
index f30cdc8..4a38b4e 100644
--- a/setup.py
+++ b/setup.py
@@ -39,7 +39,7 @@
 setup(
   name='sgtpy',
   license='MIT',
-  version='0.0.19',
+  version='0.0.20',
   description='SAFT-VR-MIE EOS and SGT',
   author='Gustavo Chaparro Maldonado, Andres Mejia Matallana, Erich A. Muller',
   author_email='g.chaparro-maldonado21@imperial.ac.uk',