diff --git a/requirement.txt b/requirement.txt
index 8337a87..88a190e 100644
--- a/requirement.txt
+++ b/requirement.txt
@@ -2,3 +2,5 @@ xhtml2pdf
 Django==3.0.5
 django-widget-tweaks==1.4.8
 sqlparse==0.3.1
+pypdf>=6.6.0 # not directly required, pinned by Snyk to avoid a vulnerability
+urllib3>=2.6.3 # not directly required, pinned by Snyk to avoid a vulnerability