diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8c3e91a..a31ba58 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,25 @@
 
 <!-- version list -->
 
+## v5.8.6 (2025-08-20)
+
+### Bug Fixes
+
+- Escape backslashes in TOML regex pattern
+  ([`1c973af`](https://github.com/BeehiveInnovations/zen-mcp-server/commit/1c973afb002650b9bbee8a831b756bef848915a1))
+
+- Establish version 5.8.6 and add version sync automation
+  ([`90a4195`](https://github.com/BeehiveInnovations/zen-mcp-server/commit/90a419538128b54fbd30da4b8a8088ac59f8c691))
+
+- Restore proper version 5.8.6
+  ([`340b58f`](https://github.com/BeehiveInnovations/zen-mcp-server/commit/340b58f2e790b84c3736aa96df7f6f5f2d6a13c9))
+
+### Chores
+
+- Sync version to config.py [skip ci]
+  ([`4f82f65`](https://github.com/BeehiveInnovations/zen-mcp-server/commit/4f82f6500502b7b6ba41875a560c41f6a63b683b))
+
+
 ## v1.1.0 (2025-08-20)
 
 ### Features