diff --git a/api/requirements.txt b/api/requirements.txt
index 27b215e..718212a 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -17,7 +17,7 @@ idna==2.9
 limits==1.5.1
 numpy==1.18.5
 Pillow==7.1.2
-protobuf==3.12.2
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pydantic==1.5.1