diff --git a/src/backend/requirements.txt b/src/backend/requirements.txt
index 65bce964fb..f9a774b1ec 100644
--- a/src/backend/requirements.txt
+++ b/src/backend/requirements.txt
@@ -1472,9 +1472,9 @@ pynacl==1.6.2 \
     --hash=sha256:d29bfe37e20e015a7d8b23cfc8bd6aa7909c92a1b8f41ee416bbb3e79ef182b2 \
     --hash=sha256:fe9847ca47d287af41e82be1dd5e23023d3c31a951da134121ab02e42ac218c9
     # via paramiko
-pypdf==6.5.0 \
-    --hash=sha256:9cef8002aaedeecf648dfd9ff1ce38f20ae8d88e2534fced6630038906440b25 \
-    --hash=sha256:9e78950906380ae4f2ce1d9039e9008098ba6366a4d9c7423c4bdbd6e6683404
+pypdf==6.6.0 \
+    --hash=sha256:4c887ef2ea38d86faded61141995a3c7d068c9d6ae8477be7ae5de8a8e16592f \
+    --hash=sha256:bca9091ef6de36c7b1a81e09327c554b7ce51e88dad68f5890c2b4a4417f1fd7
     # via -r src/backend/requirements.in
 pyphen==0.17.2 \
     --hash=sha256:3a07fb017cb2341e1d9ff31b8634efb1ae4dc4b130468c7c39dd3d32e7c3affd \