diff --git a/requirements/test.txt b/requirements/test.txt
index b892e633..c75a792c 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -31,7 +31,7 @@ flake8-polyfill==1.0.2    # via flake8-docstrings
 flake8==3.7.9             # via -r test.in, flake8-docstrings, flake8-polyfill
 grpcio-tools==1.28.1      # via -r test.in
 hypothesis==5.10.4        # via -r test.in
-idna==2.9                 # via requests
+idna==3.0                 # via requests
 imagesize==1.2.0          # via sphinx
 importlib-metadata==1.6.0  # via pytest
 jinja2==2.11.2            # via pifpaf, sphinx