elastic · nastasha-solomon · May 5, 2025 · Apr 29, 2025 · Apr 30, 2025 · May 1, 2025
diff --git a/docs/release-notes.asciidoc b/docs/release-notes.asciidoc
@@ -3,6 +3,7 @@
 
 This section summarizes the changes in each release.
 
+* <<release-notes-8.18.1, {elastic-sec} version 8.18.1>>
 * <<release-notes-8.18.0, {elastic-sec} version 8.18.0>>
 * <<release-notes-8.17.5, {elastic-sec} version 8.17.5>>
 * <<release-notes-8.17.4, {elastic-sec} version 8.17.4>>

diff --git a/docs/release-notes/8.18.asciidoc b/docs/release-notes/8.18.asciidoc
@@ -1,6 +1,27 @@
 [[release-notes-header-8.18.0]]
 == 8.18
 
+[discrete]
+[[release-notes-8.18.1]]
+=== 8.18.1
+
+[discrete]
+[[enhancements-8.18.1]]
+==== Enhancements
+* Updates the **MITRE ATT&CK® coverage** page mapping to `v16.1` ({kibana-pull}215026[#215026]).
+* Adds a background task to upgrade Agentless deployments after {kib} has been upgraded ({kibana-pull}207143[#207143]).
+* Improves {elastic-defend}'s' CPU usage on systems with very high event volumes.
+
+[discrete]
+[[bug-fixes-8.18.1]]
+==== Fixes
+* Removes the check for unused connector roles ({kibana-pull}219358[#219358]).
+* Simplifies and improves the rule import error message ({kibana-pull}218701[#218701]).
+* Fixes the related integrations render performance on rule editing pages ({kibana-pull}217254[#217254]).
+* Prevents {esql} rules from timing out if the rule query takes longer than five minutes to complete ({kibana-pull}216667[#216667]).
+* Improves {elastic-defend}'s call site analysis logic.
+* Fixes a bug in {elastic-defend}'s redaction of diagnostics bundles.
+
 [discrete]
 [[release-notes-8.18.0]]
 === 8.18.0