diff --git a/requirements-dev.txt b/requirements-dev.txt
index 67af9c0..e26467a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -11,7 +11,7 @@ flake8==3.4.1
 idna==2.6
 mccabe==0.6.1
 olefile==0.44
-Pillow==4.1.0
+Pillow==8.2.0
 pycodestyle==2.3.1
 pyflakes==1.5.0
 python-decouple==3.0