diff --git a/ML/WhatsApp/requirements.txt b/ML/WhatsApp/requirements.txt
index c5aed81..d0eeafa 100644
--- a/ML/WhatsApp/requirements.txt
+++ b/ML/WhatsApp/requirements.txt
@@ -2,3 +2,5 @@ matplotlib
 nltk
 pandas
 wordcloud
+
+pillow>=6.2.3 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file