diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee7d1cc..0e12005 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,12 +2,12 @@
 
 All notable changes to blockrun-llm will be documented in this file.
 
-## Unreleased
+## 1.21.0 — 2026-10-20
 
 ### Changed
 - **Router Core re-synced to upstream `2cd5a10`** (was `e38958b`, five
-  upstream commits behind; the TypeScript SDK bundles `65a92c8`, which differs
-  from `2cd5a10` only in the capability snapshot). Auto routing now reads only
+  upstream commits behind; the TypeScript SDK bundles the same `2cd5a10` as of
+  3.24.3). Auto routing now reads only
   the user turn for stakes, latency and language cues, and structured output
   is taken only from `requires_structured_output` (`response_format`): a
   system prompt that lists tool schemas or says "be quick" no longer lifts a
diff --git a/VERSION b/VERSION
index 3989355..3500250 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.20.0
+1.21.0
diff --git a/blockrun_llm/__init__.py b/blockrun_llm/__init__.py
index b8afe2e..a62ca39 100644
--- a/blockrun_llm/__init__.py
+++ b/blockrun_llm/__init__.py
@@ -196,7 +196,7 @@
     create_wallet as generate_wallet,  # User-friendly alias
 )
 
-__version__ = "1.20.0"
+__version__ = "1.21.0"
 __all__ = [
     "DEFAULT_API_KEY_URL",
     "ENV_API_KEY",
diff --git a/pyproject.toml b/pyproject.toml
index 4f0b99b..04e47ba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "blockrun-llm"
-version = "1.20.0"
+version = "1.21.0"
 description = "BlockRun SDK - Pay-per-request AI (LLM, Image, Video, Music, Voice) via x402 on Base and Solana"
 readme = "README.md"
 license = "MIT"