diff --git a/modules/sync/requirements.txt b/modules/sync/requirements.txt
index 78d87a80..672666a1 100644
--- a/modules/sync/requirements.txt
+++ b/modules/sync/requirements.txt
@@ -2,7 +2,7 @@ cssselect==0.9.2
 lxml==4.9.1
 Markdown==2.6.6
 Pillow==10.3.0
-pymongo==3.3.0
+pymongo==4.6.3
 PyPDF2==1.27.9
 python-frontmatter==0.3.1
 PyYAML==5.4