diff --git a/pyproject.toml b/pyproject.toml
index 8f1aefb..cbafc73 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ readme = "README.md"
 version = "4.1.0"
 
 [tool.poetry.dependencies]
-Sphinx = {version = ">=3.5.3,<6.0.0", optional = true}
+Sphinx = {version = ">=3.5.3,<8.0.0", optional = true}
 httpx = ">=0.23,<0.28.1"
 pydantic = ">=1.8.2,<3.0.0"
 python = "^3.9"