diff --git a/requirements.txt b/requirements.txt
index 903ac55..5dc69aa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,8 @@ SQLObject~=3.7
 formencode~=2.0
 
 tweepy~=3.9
-pytz==2019.3
+pytz>=2019.3
 
 beautifulsoup4>=4.6
-requests>=2.32.0
+requests~=2.32
+urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability