diff --git a/.appveyor_support/environments/requirements_py36.txt b/.appveyor_support/environments/requirements_py36.txt
index 4953d79..21a41e1 100644
--- a/.appveyor_support/environments/requirements_py36.txt
+++ b/.appveyor_support/environments/requirements_py36.txt
@@ -45,7 +45,7 @@ nbformat==4.4.0
 networkx==2.3
 nose==1.3.7
 notebook==6.1.5
-numpy==1.13.3
+numpy==1.22.0
 opencv-python==4.1.0.25
 pandocfilters==1.4.2
 parso==0.4.0