diff --git a/model/CRNN/requirements.txt b/model/CRNN/requirements.txt
index 8205280..0ba76f5 100644
--- a/model/CRNN/requirements.txt
+++ b/model/CRNN/requirements.txt
@@ -17,7 +17,7 @@ networkx==2.4
 numpy==1.18.2
 opencv-python==3.2.0.7
 Pillow==7.0.0
-protobuf==3.11.4
+protobuf==3.18.3
 pyparsing==2.4.6
 python-dateutil==2.8.1
 pytz==2019.3