diff --git a/requirements-dev.txt b/requirements-dev.txt
index 2b69bb6..2fd1915 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -26,7 +26,7 @@ numpy==1.19.5;python_version<"3.7"
 numpy==1.20.1;python_version>="3.7"
 palettable==3.3.0
 pandas==1.1.4
-Pillow==8.3.2
+Pillow==9.0.1
 plotly==4.13.0
 pymatgen==2020.4.29
 pyparsing==2.4.7
diff --git a/requirements.txt b/requirements.txt
index 23ae273..376b6a2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ numpy==1.19.5;python_version<"3.7"
 numpy==1.20.1;python_version>="3.7"
 palettable==3.3.0
 pandas==1.1.4
-Pillow==8.3.2
+Pillow==9.0.1
 plotly==4.13.0
 pymatgen==2020.4.29
 pyparsing==2.4.7