diff --git a/cpp/pyproject.toml.jinja b/cpp/pyproject.toml.jinja
index 437788f..1b2ac46 100644
--- a/cpp/pyproject.toml.jinja
+++ b/cpp/pyproject.toml.jinja
@@ -45,7 +45,7 @@ develop = [
     "mdformat-tables>=1",
     "pytest",
     "pytest-cov",
-    "ruff",
+    "ruff>=0.9,<0.15",
     "twine",
     "wheel",
 ]
diff --git a/js/pyproject.toml.jinja b/js/pyproject.toml.jinja
index 92f9bfb..ce4fc26 100644
--- a/js/pyproject.toml.jinja
+++ b/js/pyproject.toml.jinja
@@ -36,11 +36,11 @@ develop = [
     "codespell>=2.4,<2.5",
     "hatch-js",
     "hatchling",
-    "mdformat>=0.7.22,<0.8",
+    "mdformat>=0.7.22,<1.1",
     "mdformat-tables>=1",
     "pytest",
     "pytest-cov",
-    "ruff",
+    "ruff>=0.9,<0.15",
     "twine",
     "wheel",
 ]
diff --git a/jupyter/pyproject.toml.jinja b/jupyter/pyproject.toml.jinja
index 1f97b8b..2867f5c 100644
--- a/jupyter/pyproject.toml.jinja
+++ b/jupyter/pyproject.toml.jinja
@@ -43,7 +43,7 @@ develop = [
     "jupyterlab>=4,<5",
     "pytest",
     "pytest-cov",
-    "ruff",
+    "ruff>=0.9,<0.15",
     "twine",
     "wheel",
 ]
diff --git a/python/pyproject.toml.jinja b/python/pyproject.toml.jinja
index dc96809..a8e05ab 100644
--- a/python/pyproject.toml.jinja
+++ b/python/pyproject.toml.jinja
@@ -39,7 +39,7 @@ develop = [
     "mdformat-tables>=1",
     "pytest",
     "pytest-cov",
-    "ruff",
+    "ruff>=0.9,<0.15",
     "twine",
     "uv",
     "wheel",
diff --git a/rust/pyproject.toml.jinja b/rust/pyproject.toml.jinja
index f1321f3..1e28419 100644
--- a/rust/pyproject.toml.jinja
+++ b/rust/pyproject.toml.jinja
@@ -42,7 +42,7 @@ develop = [
     "mdformat-tables>=1",
     "pytest",
     "pytest-cov",
-    "ruff",
+    "ruff>=0.9,<0.15",
     "twine",
     "wheel",
 ]
diff --git a/rustjswasm/pyproject.toml.jinja b/rustjswasm/pyproject.toml.jinja
index 7565674..fcc931d 100644
--- a/rustjswasm/pyproject.toml.jinja
+++ b/rustjswasm/pyproject.toml.jinja
@@ -43,7 +43,7 @@ develop = [
     "mdformat-tables>=1",
     "pytest",
     "pytest-cov",
-    "ruff",
+    "ruff>=0.9,<0.15",
     "twine",
     "wheel",
 ]