diff --git a/requirements.txt b/requirements.txt
index a1bd292..8c3d40f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ idna==2.10
 joblib==0.16.0
 numpy==1.19.1
 pkg-resources==0.0.0
-protobuf==3.12.4
+protobuf==3.18.3
 psutil==5.7.2
 pyasn1==0.4.8
 pyasn1-modules==0.2.8