diff --git a/requirements/test.txt b/requirements/test.txt
index fda52d26..0fdf310f 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -29,7 +29,7 @@ flake8-polyfill==1.0.2    # via flake8-docstrings
 flake8==3.7.8
 grpcio-tools==1.27.2
 hypothesis==4.56.3
-idna==2.8                 # via requests
+idna==2.9                 # via requests
 imagesize==1.1.0          # via sphinx
 importlib-metadata==1.5.0  # via pluggy, pytest
 jinja2==2.11.1            # via pifpaf, sphinx