diff --git a/crates/quota-router-core/Cargo.toml b/crates/quota-router-core/Cargo.toml
index 400bb0de..89934667 100644
--- a/crates/quota-router-core/Cargo.toml
+++ b/crates/quota-router-core/Cargo.toml
@@ -88,7 +88,7 @@ percent-encoding = "2.1"
 urlencoding = "2.1"
 
 # For token estimation (pre-call checks, RFC-0936)
-tiktoken-rs = "0.6"
+tiktoken-rs = "0.12"
 
 # For async streaming (futures::StreamExt)
 futures-core = "0.3"