diff --git a/api/ImageSimilarity/deployment/requirements.txt b/api/ImageSimilarity/deployment/requirements.txt
index 317f794..7a97985 100644
--- a/api/ImageSimilarity/deployment/requirements.txt
+++ b/api/ImageSimilarity/deployment/requirements.txt
@@ -1,7 +1,7 @@
 numpy==1.14.3
 pandas==0.22.0
 Keras==2.1.6
-Pillow==5.3.0
+Pillow==8.3.2
 azure_common==1.1.16
 scikit_learn==0.19.1
 click==6.7
diff --git a/api/ImageSimilarity/deployment/requirements_gpu.txt b/api/ImageSimilarity/deployment/requirements_gpu.txt
index fa75415..e2f5857 100644
--- a/api/ImageSimilarity/deployment/requirements_gpu.txt
+++ b/api/ImageSimilarity/deployment/requirements_gpu.txt
@@ -1,7 +1,7 @@
 numpy==1.14.3
 pandas==0.22.0
 Keras==2.1.6
-Pillow==5.3.0
+Pillow==8.3.2
 azure_common==1.1.16
 scikit_learn==0.19.1
 click==6.7