diff --git a/upgrade-tidb-using-tiup.md b/upgrade-tidb-using-tiup.md
index c9fc7b65bb798..0d3c5bda5813b 100644
--- a/upgrade-tidb-using-tiup.md
+++ b/upgrade-tidb-using-tiup.md
@@ -71,6 +71,7 @@ The following provides release notes you need to know when you upgrade from v8.4
 - TiDB v8.5.3 [compatibility changes](/releases/release-8.5.3.md#compatibility-changes)
 - TiDB v8.5.4 [compatibility changes](/releases/release-8.5.4.md#compatibility-changes)
 - TiDB v8.5.5 [compatibility changes](https://docs.pingcap.com/tidb/stable/release-8.5.5/#compatibility-changes)
+- TiDB v8.5.6 [compatibility changes](https://docs.pingcap.com/tidb/stable/release-8.5.6/#compatibility-changes)
 
 ### Step 2: Upgrade TiUP or TiUP offline mirror
 
diff --git a/variables.json b/variables.json
index 2e2509e7ab677..779b49bfb941d 100644
--- a/variables.json
+++ b/variables.json
@@ -1,7 +1,7 @@
 {
   "tidb": "TiDB",
-  "tidb-version": "8.5.5",
-  "tidb-release-date": "2026-01-15",
+  "tidb-version": "8.5.6",
+  "tidb-release-date": "2026-04-14",
   "tidb-operator-version": "v1.6.4",
   "self-managed": "TiDB Self-Managed",
   "starter": "TiDB Cloud Starter",