diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index ec5a19282ea1bafd3e7d153480c4f9e22de45b99..4ec29e6b73bcf120b46cbc2eb81830a84c5673d3 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -2,6 +2,8 @@ Changes in Release 2.2.x
 --------------------------------------------------------------------------------
 
  * Add AAindex databases (Kawashima et al., 2000)
+ * Added experimental molecular structure format OMF (OpenStructure Minimal 
+   Format)
  * Removed GUI components in containers
  * DSSP 4.0 support in DSSP binding (https://github.com/PDB-REDO/dssp)
  * mol.alg.PDBize does not turn plain polymer chains (not marked peptide or