diff --git a/ch04/requirements.txt b/ch04/requirements.txt
index e5f4ec6..2bc2c9c 100644
--- a/ch04/requirements.txt
+++ b/ch04/requirements.txt
@@ -5,7 +5,7 @@ Pillow==12.0.0
 xmltodict==1.0.2
 pytesseract==0.3.13
 easyocr==1.7.2
-pypdf==6.6.2
+pypdf==6.9.2
 python-docx==1.2.0
 charset-normalizer