diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index b4567a50b..13e817097 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -10,7 +10,7 @@ dependencies:
 - nglview =4.0.1
 - notebook
 - numpy =2.5.3
-- phonopy =4.4.0
+- phonopy =4.5.0
 - plotly =7.0.0
 - pymatgen =2026.5.4
 - pyscal3 =3.3.2
diff --git a/pyproject.toml b/pyproject.toml
index 915a243ed..764c3c946 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ surface = [
     "pymatgen==2026.5.4",
 ]
 phonopy = [
-    "phonopy==4.4.0",
+    "phonopy==4.5.0",
     "spglib==2.7.0",
 ]
 mp-api = [