diff --git a/pyproject.toml b/pyproject.toml
index 5082934b..27e70ed6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -69,7 +69,7 @@ optional-dependencies.dev = [
     "sphinx-copybutton==0.5.2",
     "sphinx-substitution-extensions==2024.8.6",
     "sphinxcontrib-spelling==8",
-    "sybil==7.1.1",
+    "sybil==8.0.0",
     "types-requests==2.32.0.20240914",
     "vulture==2.12",
     "vws-python-mock==2024.8.30",