diff --git a/requirements.txt b/requirements.txt
index ce4f099..3779ec9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ Flask-SQLAlchemy==2.4.0
 itsdangerous==1.1.0
 Jinja2==2.10.1
 MarkupSafe==1.1.1
-pdf2image==1.5.4
+pdf2image==1.15.1
 Pillow==6.2.0
 PyMySQL==0.9.3
 pyocr==0.6