diff --git a/requirements.txt b/requirements.txt
index e4360b8..e135cc8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
-django<=3.0,<5.0
+django<=3.2.23,<5.0
 filesig>=0.3
 captcha>=0.3
 cryptography>=2.8
+pillow>=10.0.1 # not directly required, pinned by Snyk to avoid a vulnerability