diff --git a/requirements.txt b/requirements.txt
index d99b9a8..404e38a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 cx-Freeze==5.1.1
 img2pdf==0.3.1
 Pillow==8.1.1
-PyPDF2==1.26.0
+PyPDF2==1.27.9
 Pypubsub==4.0.0
 six==1.11.0
 wxPython==4.0.3