diff --git a/requirements.txt b/requirements.txt
index 6b2665ee..a109c716 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ newick==1.0.0
 numpy==1.19.3
 packaging==20.7
 pandas==1.2.3
-pillow==8.1.1
+pillow
 pluggy==0.13.1
 prompt-toolkit==1.0.14
 py==1.10.0
diff --git a/setup.py b/setup.py
index deaa851b..a437e4b2 100644
--- a/setup.py
+++ b/setup.py
@@ -44,7 +44,7 @@
         "numpy==1.19.3",
         "packaging==20.7",
         "pandas==1.2.3",
-        "pillow==8.1.1",
+        "pillow",
         "pluggy==0.13.1",
         "prompt-toolkit==1.0.14",
         "py==1.10.0",