diff --git a/requirements.txt b/requirements.txt
index 7c8aca9..bdb314b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ opt-einsum==3.2.1
 pandas==1.0.5
 Pillow==6.2.1
 plotly==4.2.1
-protobuf==3.12.2
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pydicom==1.3.0