diff --git a/pyproject.toml b/pyproject.toml
index 8944bb058..3f16eeece 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,7 @@ test = [
 
 docs = [
     "volatility3[dev]",
-    "sphinx>=8.0.0,<9",
+    "sphinx>=4.0.0,<9",
     "sphinx-autodoc-typehints>=2.0.0,<3",
     "sphinx-rtd-theme>=3.0.1,<4",
 ]