diff --git a/requirements.txt b/requirements.txt
index 2b2ef72..534f274 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,4 +3,5 @@ requests_cache
 pandas
 pytest
 nltk
-# python -c 'import nltk; nltk.download("stopwords")'
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+# python -c 'import nltk; nltk.download("stopwords")'
+numpy>=1.22.2 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file