diff --git a/requirements.txt b/requirements.txt
index 6634419..cbb132e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ oauthlib==3.1.0
 opencv-python==4.2.0.34
 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
 requests==2.24.0