diff --git a/requirements.txt b/requirements.txt
index 978cb03..a19aea4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ python-dateutil
 matplotlib==2.0.2
 numpy==1.14.1
 pandas==0.20.3
-Pillow==4.2.1
+Pillow==9.3.0
 PyVISA==1.8
 ttkthemes==1.5.2
 markdown2==2.3.5