diff --git a/pyproject.toml b/pyproject.toml
index 964e08f..7ed1575 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ dependencies = [
     "click",
     "Jinja2>=2.7",
     "Markdown",
-    "Pillow>=8.0.0,<10.0.0",
+    "Pillow>=8.0.0",
     "pilkit",
     "natsort",
 ]
diff --git a/tox.ini b/tox.ini
index 02be03a..726124b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,12 +1,12 @@
 [tox]
-envlist = py{38,39,310,311}-pillow{80,90,-latest},pypy3,check
+envlist = py{38,39,310,311}-pillow{80,90,100,-latest},pypy3,check
 skip_missing_interpreters = true
 
 [gh-actions]
 python =
     3.8: py38-pillow80, check
     3.9: py39-pillow90
-    3.10: py310-pillow-latest
+    3.10: py310-pillow100
     3.11: py310-pillow-latest
     pypy3: pypy3
 
@@ -16,6 +16,7 @@ wheel_build_env = .pkg
 deps =
     pillow80: Pillow==8.0.1
     pillow90: Pillow==9.0.1
+    pillow100: Pillow==10.0.1
 extras =
     all
     tests