diff --git a/pyproject.toml b/pyproject.toml
index 9ccb048..056be53 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ readme = "README.md"
 requires-python = ">=3.7"
 dependencies = [
   "pyyaml",
-  "sphinx>=4,<7",
+  "sphinx>=5,<6",
   "docutils",
   "click",
   "libsass~=0.20.1",