diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index f2a86b9dc..e4456e546 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -10,7 +10,7 @@ dependencies:
 - nglview =3.1.4
 - notebook
 - numpy =2.3.5
-- phonopy =2.46.1
+- phonopy =2.47.1
 - plotly =6.5.0
 - pymatgen =2025.10.7
 - pyscal3 =3.3.0
diff --git a/pyproject.toml b/pyproject.toml
index d01109655..3d1348256 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ surface = [
     "pymatgen==2025.10.7",
 ]
 phonopy = [
-    "phonopy==2.46.1",
+    "phonopy==2.47.1",
     "spglib==2.7.0",
 ]