diff --git a/adi_function_app/requirements.txt b/adi_function_app/requirements.txt
index a85233d..2be1da8 100644
--- a/adi_function_app/requirements.txt
+++ b/adi_function_app/requirements.txt
@@ -9,7 +9,7 @@ pandas
 azure-identity
 openpyxl
 regex
-nltk==3.9
+nltk==3.9.1
 bs4
 azure-search
 azure-search-documents