diff --git a/codemeta.json b/codemeta.json
index faa27c9..d3709fc 100644
--- a/codemeta.json
+++ b/codemeta.json
@@ -7,7 +7,7 @@
     "@type": "SoftwareSourceCode",
     "identifier": "timbl",
     "name": "TiMBL",
-    "version": "6.9",
+    "version": "6.8.1",
     "description": "TiMBL is an open source software package implementing several memory-based learning algorithms, among which IB1-IG, an implementation of k-nearest neighbor classification with feature weighting suitable for symbolic feature spaces, and IGTree, a decision-tree approximation of IB1-IG. All implemented algorithms have in common that they store some representation of the training set explicitly in memory. During testing, new cases are classified by extrapolation from the most similar stored cases.",
     "license": "https://spdx.org/licenses/GPL-3.0",
 	"url": "https://languagemachines.github.io/timbl",
diff --git a/configure.ac b/configure.ac
index 5b29036ab..9520fe5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.69])
-AC_INIT([timbl],[6.9],[lamasoftware@science.ru.nl]) #also adapt in codemeta.json!
+AC_INIT([timbl],[6.8.1],[lamasoftware@science.ru.nl]) #also adapt in codemeta.json!
 AM_INIT_AUTOMAKE
 AC_CONFIG_SRCDIR([.])
 AC_CONFIG_MACRO_DIR([m4])