diff --git a/requirements.txt b/requirements.txt
index a502bcb5..bac0e3ba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,5 +5,5 @@ langchain_openai==0.0.5
 pytest==8.0.0
 python-dotenv==1.0.1
 setuptools==65.5.1
-tiktoken==0.6.0
+tiktoken>=0.5.2,<0.6.0
 tqdm==4.66.1