diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 8792e96..2999bb3 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    ".": "6.3.0"
+    ".": "6.4.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 978db28..54cc4e8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,51 @@
 # Changelog
 
+## [6.4.0](https://github.com/Flagsmith/flagsmith-python-client/compare/v6.3.0...v6.4.0) (2026-10-30)
+
+### Features
+
+- **CI:** Set up CodSpeed ([#272](https://github.com/Flagsmith/flagsmith-python-client/issues/272))
+  ([701e8e5](https://github.com/Flagsmith/flagsmith-python-client/commit/701e8e5f1aaa25661e24714dbd934d61e3ecdd4c))
+- **Flag Dependency:** Evaluate flags that depend on other flags
+  ([#267](https://github.com/Flagsmith/flagsmith-python-client/issues/267))
+  ([ab669bb](https://github.com/Flagsmith/flagsmith-python-client/commit/ab669bbec8ab8ea091e6a75e86f1d3bea5d20c78))
+
+### CI
+
+- Label Renovate's SDK spec bump PRs ([#265](https://github.com/Flagsmith/flagsmith-python-client/issues/265))
+  ([a7dccd0](https://github.com/Flagsmith/flagsmith-python-client/commit/a7dccd024092925771efba5c0dec2b03592d0a79))
+- pre-commit autoupdate ([#248](https://github.com/Flagsmith/flagsmith-python-client/issues/248))
+  ([cdbc47f](https://github.com/Flagsmith/flagsmith-python-client/commit/cdbc47ffaad41228648a18f31463bbf3c0aefc71))
+- pre-commit autoupdate ([#254](https://github.com/Flagsmith/flagsmith-python-client/issues/254))
+  ([23c881d](https://github.com/Flagsmith/flagsmith-python-client/commit/23c881d806e7c8bc87c0a9240c9378eabce87eeb))
+- Run CodSpeed benchmarks in simulation on GitHub-hosted runners
+  ([#274](https://github.com/Flagsmith/flagsmith-python-client/issues/274))
+  ([4d5c27f](https://github.com/Flagsmith/flagsmith-python-client/commit/4d5c27f39fbc10c77dd76eafc417406840457077))
+- Run the Flagsmith SDK behavioural spec ([#263](https://github.com/Flagsmith/flagsmith-python-client/issues/263))
+  ([adddf47](https://github.com/Flagsmith/flagsmith-python-client/commit/adddf470f1280705e6db0471290a024a1937dcb6))
+
+### Dependency Updates
+
+- bump flagsmith-engine to 11.1.1 ([#259](https://github.com/Flagsmith/flagsmith-python-client/issues/259))
+  ([6227271](https://github.com/Flagsmith/flagsmith-python-client/commit/62272713fb70eb378b348b724bae3da4a8ac796b))
+- update dependency flagsmith-flag-engine to v11.1.0
+  ([#252](https://github.com/Flagsmith/flagsmith-python-client/issues/252))
+  ([ed65702](https://github.com/Flagsmith/flagsmith-python-client/commit/ed657025a2f0aed1386e9f51e54e7a32d44541d4))
+- update dependency flagsmith/sdk-spec to v0.6.0
+  ([#270](https://github.com/Flagsmith/flagsmith-python-client/issues/270))
+  ([b1a41c5](https://github.com/Flagsmith/flagsmith-python-client/commit/b1a41c5d8b8ebf7ca0d64e894406a11da2f79d46))
+
+### Performance Improvements
+
+- Map identity overrides, evaluate environment flags once per document refresh
+  ([#262](https://github.com/Flagsmith/flagsmith-python-client/issues/262))
+  ([4fafcd9](https://github.com/Flagsmith/flagsmith-python-client/commit/4fafcd9c3a95ddd0beea1de63efb2f37e6898909))
+
+### Other
+
+- **deps:** bump urllib3 from 2.7.0 to 2.8.0 ([#255](https://github.com/Flagsmith/flagsmith-python-client/issues/255))
+  ([6e48b82](https://github.com/Flagsmith/flagsmith-python-client/commit/6e48b82c6c0e4f31db01765d770015427d0e4a90))
+
 ## [6.3.0](https://github.com/Flagsmith/flagsmith-python-client/compare/v6.2.3...v6.3.0) (2026-09-23)
 
 ### Features
diff --git a/pyproject.toml b/pyproject.toml
index a9d628d..24d3783 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "flagsmith"
-version = "6.3.0"
+version = "6.4.0"
 description = "Flagsmith Python SDK"
 authors = ["Flagsmith <support@flagsmith.com>"]
 license = "BSD3"