diff --git a/requirements.txt b/requirements.txt
index 40716b56..dabc841f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -71,7 +71,7 @@ wand==0.6.13
 # pypdf - pure-Python PDF library, used to auto-count a publication's pages
 # (issue #1298) by reading the PDF's page tree directly (no rendering).
 # See: https://pypi.org/project/pypdf/
-pypdf==6.13.2
+pypdf==6.13.3
 
 # Pillow - Python Imaging Library fork, for image manipulation
 # Note: Pillow 10.0+ dropped Python 3.7 support; 11.0+ dropped Python 3.8