diff --git a/requirements.txt b/requirements.txt
index 24ba256..3db26ff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,9 @@
 beautifulsoup4==4.6.0
-flask>=0.12.3
+flask>=2.2.5
 tweepy==3.8.0
 gunicorn==19.10.0
 flask-cors==3.0.9
-requests>=2.20.0
+requests>=2.31.0
 Mastodon.py==1.6.3
+certifi>=2023.7.22 # not directly required, pinned by Snyk to avoid a vulnerability
+werkzeug>=2.2.3 # not directly required, pinned by Snyk to avoid a vulnerability