diff --git a/covid19-notebooks/requirements.txt b/covid19-notebooks/requirements.txt
index c147cdb..0551d63 100644
--- a/covid19-notebooks/requirements.txt
+++ b/covid19-notebooks/requirements.txt
@@ -8,3 +8,4 @@ pywaffle
 requests
 scipy
 seaborn
+aiohttp>=3.12.14 # not directly required, pinned by Snyk to avoid a vulnerability