diff --git a/MADDPG/requirements.txt b/MADDPG/requirements.txt
index 66849ce..5bc1f98 100644
--- a/MADDPG/requirements.txt
+++ b/MADDPG/requirements.txt
@@ -39,7 +39,7 @@ packaging==20.0
 pandas==0.25.3
 Pillow==6.2.0
 pluggy==0.13.1
-protobuf==3.11.2
+protobuf==3.18.3
 py==1.8.1
 py-cpuinfo==5.0.0
 pyasn1==0.4.8