diff --git a/ChangeLog b/ChangeLog
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--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,9 @@
 pkcs11-helper
 Copyright (c) 2005-2022 Alon Bar-Lev <alon.barlev@gmail.com>
 
+????-??-?? - Version 1.31.0
+* threading: fix mutex handling for cond_wait, thanks to Gleb Popov.
+
 2023-12-01 - Version 1.30.0
 * core: add dynamic loader provider attribute, thanks to Marc Becker.
 * openssl: support DSA in libressl-3.5.0, thanks to Fabrice Fontaine.