diff --git a/CHANGELOG b/CHANGELOG
index 6c1600561b3d882a0a77bb6d243aa9525ba3815c..7fe8a48212c0fa62f55e651c5b5493aebe288551 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -11,6 +11,9 @@ Release 1.3.0
 * 2010 Dunbrack rotamer library has been replaced by an own backbone dependent 
   rotamer library. All scripts required to reproduce the data are in 
   extras/data_generation/rotamer_library
+* Penultimate rotamer library has been replaced by an own backbone independent
+  rotamer library. All scripts required to reproduce the data are in
+  extras/data_generation/rotamer_library
 * SampleMonteCarlo function moved to Python. This makes it possible to provide 
   sampler/closer/scorer/cooler objects implemented in both, Python and C++ 
 * Several minor bug fixes, improvements, and speed-ups