diff --git a/requirements.txt b/requirements.txt
index c20a128..147e6ec 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -92,7 +92,7 @@ osrf-pycommon==0.1.9
 pexpect==4.2.1
 Pillow==5.1.0
 pluggy==0.6.0
-protobuf==3.0.0
+protobuf==3.15.0
 psutil==5.4.2
 py==1.5.2
 pycairo==1.16.2