diff --git a/tools/visualisePropertyTree/requirements.txt b/tools/visualisePropertyTree/requirements.txt
index e515b15..f103fd1 100644
--- a/tools/visualisePropertyTree/requirements.txt
+++ b/tools/visualisePropertyTree/requirements.txt
@@ -2,7 +2,7 @@ certifi==2017.4.17
 chardet==3.0.4
 idna==2.5
 isodate==0.5.4
-numpy==1.13.0
+numpy==1.22.0
 pandas==0.20.2
 pyparsing==2.2.0
 python-dateutil==2.6.0