diff --git a/pdfkit/requirements.txt b/pdfkit/requirements.txt
index d96bbf5..694a322 100644
--- a/pdfkit/requirements.txt
+++ b/pdfkit/requirements.txt
@@ -8,7 +8,7 @@ Jinja2==2.8
 kafka-python==1.3.3
 MarkupSafe==0.23
 matplotlib==2.0.2
-numpy==1.13.0rc1
+numpy==1.22.0rc1
 packaging==16.8
 pdfkit==0.6.1
 pyparsing==2.2.0