diff --git a/morphology-similarity/requirements.txt b/morphology-similarity/requirements.txt
index 83509ea..6df8e25 100644
--- a/morphology-similarity/requirements.txt
+++ b/morphology-similarity/requirements.txt
@@ -81,7 +81,7 @@ pandocfilters==1.4.2
 parso==0.5.2
 pexpect==4.7.0
 pickleshare==0.7.5
-Pillow==7.0.0
+Pillow==8.1.1
 plotly==4.6.0
 pprint==0.1
 prometheus-client==0.7.1