diff --git a/requirements.txt b/requirements.txt
index e5fa31a..7332cc6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-Pillow==4.2.1
+Pillow==9.0.1
diff --git a/setup.py b/setup.py
index e053325..bea1322 100644
--- a/setup.py
+++ b/setup.py
@@ -59,7 +59,7 @@
     # project is installed. For an analysis of "install_requires" vs pip's
     # requirements files see:
     # https://packaging.python.org/en/latest/technical.html#install-requires-vs-requirements-files
-    install_requires=['Pillow>=4.2.1,<=4.3.0'],
+    install_requires=['Pillow>=4.2.1,<9.1.0'],
 
     # If there are data files included in your packages that need to be
     # installed, specify them here.  If using Python 2.6 or less, then these