diff --git a/pkgs/development/python-modules/proto-plus/default.nix b/pkgs/development/python-modules/proto-plus/default.nix
index 13120930f0b1..f211febbe5c4 100644
--- a/pkgs/development/python-modules/proto-plus/default.nix
+++ b/pkgs/development/python-modules/proto-plus/default.nix
@@ -34,6 +34,8 @@ buildPythonPackage rec {
   pytestFlags = [
     # pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
     "-Wignore::DeprecationWarning"
+    # float_precision option is deprecated for json_format error with latest protobuf
+    "-Wignore:float_precision:UserWarning"
   ];
 
   pythonImportsCheck = [ "proto" ];