diff --git a/requirements.txt b/requirements.txt
index e318692..debe70e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 attrs==17.4.0
 cycler==0.10.0
 matplotlib==2.1.2
-numpy==1.14.1
+numpy==1.22.0
 pdfminer3k==1.3.1
 pluggy==0.6.0
 ply==3.11