diff --git a/CHANGELOG.md b/CHANGELOG.md
index c868a0da5..fac625109 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# v6.6.1
+- Fixed, benchmark validation on NUMA hardware produced incorrect results in some conditions.
+
 # v6.6.0
 - Online benchmark protocol upgraded to v2, validation not compatible with previous versions.
   - Single thread benchmark now is cheat-resistant, not possible speedup it with multiple threads.