diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 9d48af7e..b96caf7f 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "9.18.3"
+  ".": "9.18.4"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 68c5b72e..c98c6666 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to the LaunchDarkly Python SDK will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
 
+## [9.18.4](https://github.com/launchdarkly/python-server-sdk/compare/9.18.3...9.18.4) (2026-10-26)
+
+
+### Bug Fixes
+
+* Use monotonic clocks for migration latency and FDv2 stream-init timing ([#539](https://github.com/launchdarkly/python-server-sdk/issues/539)) ([346e9be](https://github.com/launchdarkly/python-server-sdk/commit/346e9be7e63980878bc6f0cd384f521ea25bfafc))
+
 ## [9.18.3](https://github.com/launchdarkly/python-server-sdk/compare/9.18.2...9.18.3) (2026-10-20)
 
 
diff --git a/PROVENANCE.md b/PROVENANCE.md
index 5cd9ba6d..29455115 100644
--- a/PROVENANCE.md
+++ b/PROVENANCE.md
@@ -9,7 +9,7 @@ To verify build provenance attestations, we recommend using the [GitHub CLI `att
 <!-- x-release-please-start-version -->
 ```
 # Set the version of the SDK to verify
-SDK_VERSION=9.18.3
+SDK_VERSION=9.18.4
 ```
 <!-- x-release-please-end -->
 
diff --git a/ldclient/version.py b/ldclient/version.py
index f63a40e5..bdf88952 100644
--- a/ldclient/version.py
+++ b/ldclient/version.py
@@ -1 +1 @@
-VERSION = "9.18.3"  # x-release-please-version
+VERSION = "9.18.4"  # x-release-please-version
diff --git a/pyproject.toml b/pyproject.toml
index 3e2bcd6d..08580dec 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "launchdarkly-server-sdk"
-version = "9.18.3"
+version = "9.18.4"
 description = "LaunchDarkly SDK for Python"
 authors = [
     {name = "LaunchDarkly", email = "dev@launchdarkly.com"}