diff --git a/tests/requirements.txt b/tests/requirements.txt
index f4f62c9f..b60dc1ac 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -30,7 +30,7 @@ packaging==20.4
 pbkdf2==1.3
 Pillow==7.1.2
 pluggy==0.13.1
-protobuf==3.12.2
+protobuf==3.15.0
 py==1.8.2
 py-algorand-sdk==1.3.0
 pycparser==2.20