diff --git a/requirements.txt b/requirements.txt
index fb49618..548d039 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,6 +46,7 @@ six==1.17.0
 sniffio==1.3.1
 starlette==0.46.2
 tenacity==9.1.2
+tiktoken==0.9.0
 tokenizers==0.21.1
 tqdm==4.67.1
 types-requests==2.32.0.20250328