diff --git a/api/requirements.txt b/api/requirements.txt
index bc8a454..5dc50de 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -102,7 +102,7 @@ Pillow==5.2.0
 pluggy==0.8.1
 prometheus-client==0.4.2
 prompt-toolkit==2.0.7
-protobuf==3.6.1
+protobuf==3.15.0
 ptyprocess==0.6.0
 py==1.7.0
 pycparser==2.19