diff --git a/api/requirements.txt b/api/requirements.txt
index d2856be..50c65e8 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -23,7 +23,7 @@ numpy==1.16.0
 pathlib==1.0.1
 pbr==5.1.1
 Pillow==5.4.1
-protobuf==3.6.1
+protobuf==3.15.0
 pycparser==2.19
 pypng==0.0.19
 python-dotenv==0.10.1