diff --git a/test-requirements.txt b/test-requirements.txt
index beb2fd0..26d3f4b 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,7 +4,7 @@ flake8-docstrings
 flake8-builtins
 isort
 juju>=3.1
-macaroonbakery==1.3.2  # https://protobuf.dev/news/2022-05-06/#python-updates
+macaroonbakery==1.3.4  # https://protobuf.dev/news/2022-05-06/#python-updates
 mypy
 pep8-naming
 pyproject-flake8