diff --git a/flatpak/requirements-pinned.txt b/flatpak/requirements-pinned.txt
index 810a136..22d6997 100644
--- a/flatpak/requirements-pinned.txt
+++ b/flatpak/requirements-pinned.txt
@@ -1,6 +1,6 @@
 PySide6==6.11.1
 shiboken6==6.11.1
-pypdf==6.13.0
+pypdf==6.13.3
 qtawesome==1.4.2
 pillow==12.2.0
 pymupdf==1.27.2.3
diff --git a/requirements.txt b/requirements.txt
index a6913d8..3b60c29 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 PySide6>=6.11.1
-pypdf>=6.13.0
+pypdf>=6.13.3
 # GHSA-537c-gmf6-5ccf: signature verification bypass in legacy OpenSSL
 # providers fixed in 48.0.1.
 cryptography>=48.0.1