diff --git a/pyproject.toml b/pyproject.toml
index af837355..787f70be 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ dependencies = [
     "matplotlib>=2.2.2",
     "h5py>=3.0",
     "spglib>=2.3",
-    "phonopy>=2.28,<2.29",
+    "phonopy>=2.29,<2.30",
 ]
 license = { file = "LICENSE" }