diff --git a/pyproject.toml b/pyproject.toml
index d92c9c2..41b3209 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-  "build>=1.2.2,<1.4.0",
+  "build>=1.2.2,<1.5.0",
   "ruff>=0.12.2,<0.15.0",
   "sphinx>=7.3.7,<8.2.0",
   "scikit-learn>=1.5,<1.9",
@@ -43,7 +43,7 @@ homepage = "https://github.com/CyberAgentAILab/python-dte-adjustment"
 
 [tool.uv]
 dev-dependencies = [
-  "build>=1.2.2,<1.4.0",
+  "build>=1.2.2,<1.5.0",
   "ruff>=0.12.2,<0.15.0",
   "sphinx>=7.3.7,<8.2.0",
   "scikit-learn>=1.5,<1.9",