diff --git a/requirements-dev.txt b/requirements-dev.txt
index e3626352..c5c5cc14 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,7 +3,7 @@ myst-parser
 pre-commit
 pytest
 requests
-sphinx>=1.6
+sphinx>=2.1
 sphinx-intl
 tabulate
 transifex-client