diff --git a/requirements.txt b/requirements.txt
index 3dca232..db013f6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ psycopg2==2.8.3; sys_platform == 'win32' or python_version >= '3.8'
 pydot==1.4.1
 python-ldap==3.1.0; sys_platform != 'win32'
 pyparsing==2.2.0
-PyPDF2==1.26.0
+PyPDF2==1.27.9
 pyserial==3.4
 python-dateutil==2.7.3
 pytz==2019.1