diff --git a/api/requirements.txt b/api/requirements.txt
index 08ba2eb..409b05e 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -26,7 +26,7 @@ mccabe==0.6.1
 numpy==1.18.3
 oauthlib==3.1.0
 opt-einsum==3.2.1
-protobuf==3.11.3
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pylint==2.4.4