diff --git a/requirements/base.txt b/requirements/base.txt
index fe962b6..51e1113 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -2,7 +2,7 @@
 # Core dependencies for FREE and PAID tiers
 
 pdfplumber>=0.11.9  # PDF parsing (updated 2026-03-02)
-pypdf>=6.11.0  # PDF utilities - security patches (updated 2026-03-02)
+pypdf>=6.13.3  # PDF utilities - security patches (updated 2026-03-02)
 pandas>=3.0.3  # Data processing
 python-dotenv>=1.2.2  # Environment configuration
 tabulate>=0.10.0  # Table formatting