diff --git a/requirements.txt b/requirements.txt
index 85c400d..22aa2d0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ numpy==1.19.0
 oauthlib==3.1.0
 opt-einsum==3.2.1
 Pillow==7.1.2
-protobuf==3.12.2
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pycocotools==2.0.1