diff --git a/source/Python_FoveatedStreamingServerClient/requirements.txt b/source/Python_FoveatedStreamingServerClient/requirements.txt
index 4b9f74f..5ffff8a 100644
--- a/source/Python_FoveatedStreamingServerClient/requirements.txt
+++ b/source/Python_FoveatedStreamingServerClient/requirements.txt
@@ -26,7 +26,7 @@ oauthlib==3.1.0
 opencv-python==4.3.0.36
 opt-einsum==3.3.0
 Pillow==7.2.0
-protobuf==3.13.0
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pyparsing==2.4.7