diff --git a/requirements.txt b/requirements.txt
index 3fb847ac..ac2f0ad2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,10 +4,12 @@ python-dotenv==1.0.0
 streamlit==1.18.1
 openai==0.27.6
 faiss-cpu==1.7.4
+altair==4.0
+tiktoken==0.4.0
 
 # uncomment to use huggingface llms
 # huggingface-hub==0.14.1
 
 # uncomment to use instructor embeddings
 # InstructorEmbedding==1.0.1
-# sentence-transformers==2.2.2
\ No newline at end of file
+# sentence-transformers==2.2.2