diff --git a/site/content/3.12/release-notes/version-3.12/incompatible-changes-in-3-12.md b/site/content/3.12/release-notes/version-3.12/incompatible-changes-in-3-12.md
index 317a09b005..c819419ce7 100644
--- a/site/content/3.12/release-notes/version-3.12/incompatible-changes-in-3-12.md
+++ b/site/content/3.12/release-notes/version-3.12/incompatible-changes-in-3-12.md
@@ -1075,6 +1075,16 @@ background compactions. The changed default ensures this cleanup to happen more
frequently. Compactions can potentially lead to spikes in CPU, memory, and I/O
usage. You may now observe this daily instead of monthly.
+### RocksDB transaction lock timeout controlled internally
+
+Deprecated in: v3.12.6
+
+The `--rocksdb.transaction-lock-timeout` startup option has been deprecated.
+It was supposed to let you configure the wait timeout in milliseconds for
+locking a document in a transaction. However, the lock timeout is actually set
+to differnet values internally, depending on what is a meaningful timeout for
+a given case.
+
## Client tools
### arangodump
diff --git a/site/content/3.13/release-notes/version-3.12/incompatible-changes-in-3-12.md b/site/content/3.13/release-notes/version-3.12/incompatible-changes-in-3-12.md
index 317a09b005..c819419ce7 100644
--- a/site/content/3.13/release-notes/version-3.12/incompatible-changes-in-3-12.md
+++ b/site/content/3.13/release-notes/version-3.12/incompatible-changes-in-3-12.md
@@ -1075,6 +1075,16 @@ background compactions. The changed default ensures this cleanup to happen more
frequently. Compactions can potentially lead to spikes in CPU, memory, and I/O
usage. You may now observe this daily instead of monthly.
+### RocksDB transaction lock timeout controlled internally
+
+Deprecated in: v3.12.6
+
+The `--rocksdb.transaction-lock-timeout` startup option has been deprecated.
+It was supposed to let you configure the wait timeout in milliseconds for
+locking a document in a transaction. However, the lock timeout is actually set
+to differnet values internally, depending on what is a meaningful timeout for
+a given case.
+
## Client tools
### arangodump