diff --git a/requirements-test.txt b/requirements-test.txt
index 6a95c335..fa7b30a9 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -3,3 +3,6 @@ sphinx>=1.1.0
 pylint
 coverage
 coveralls
+
+# Sphinx theme
+furo~=2023.9.10