diff --git a/pyproject.toml b/pyproject.toml
index b19b6c4..a504a4d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,7 +51,7 @@ dependencies = [
     "requests>=2.28.0",
     "rich>=13.0.0",
     "openai>=1.0.0",
-    "tiktoken>=0.5.0",
+    "tiktoken>=0.12.0",
     "pygithub>=1.59.0",
     "psutil>=5.9.0",
     "jinja2>=3.0.0",