diff --git a/ARTS_VERSION b/ARTS_VERSION
new file mode 100644
index 0000000000000000000000000000000000000000..dfe30ee17332053b26bdb0a29e3ad4933c927141
--- /dev/null
+++ b/ARTS_VERSION
@@ -0,0 +1 @@
+2.5.12
diff --git a/ChangeLog b/ChangeLog
index 9f6c151c4a1a261c708c3a0c4393741b2df4eaf3..a678ae8bdbcf4aff0ace43aed5d3e5b4d5748025 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2023-11-08 Oliver Lemke <oliver.lemke@uni-hamburg.de>
+
+	* ARTS-XML-DATA-2-6-1
+
+	* ARTS_VERSION: Add file with corresponding ARTS version.
+
 2023-10-11  Oliver Lemke  <oliver.lemke@uni-hamburg.de>
 
 	* ARTS-XML-DATA-2-6-0