diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index dbcb533..3fe7dc1 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.7.2  # keep in rough sync with pyproject.toml
+    rev: v0.8.0  # keep in rough sync with pyproject.toml
     hooks:
       - name: Ruff formatting
         id: ruff-format
diff --git a/pyproject.toml b/pyproject.toml
index 2f570ab..42c5e8c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -53,7 +53,7 @@ dev = [
     "pre-commit",
     # Ruff is using minor versions for breaking changes until their 1.0 release.
     # See https://docs.astral.sh/ruff/versioning/
-    "ruff < 0.8",  # keep in rough sync with pre-commit-config.yaml
+    "ruff < 0.9",  # keep in rough sync with pre-commit-config.yaml
 ]
 
 [project.urls]