diff --git a/api_flask/requirements.txt b/api_flask/requirements.txt
index 48f1671..4d3e78b 100644
--- a/api_flask/requirements.txt
+++ b/api_flask/requirements.txt
@@ -20,7 +20,7 @@ packaging==20.4
 pandas==1.1.3
 partd==1.1.0
 Pillow==8.1.1
-protobuf==3.13.0
+protobuf==3.18.3
 psutil==5.7.2
 pyarrow==1.0.1
 pyparsing==2.4.7