diff --git a/conda/meta.yaml b/conda/meta.yaml
index ce18c302..2c215a8a 100644
--- a/conda/meta.yaml
+++ b/conda/meta.yaml
@@ -33,7 +33,7 @@ requirements:
     - matplotlib-base>=2.2.2
     - pyyaml
     - h5py
-    - phonopy>=2.13,<2.14
+    - phonopy>=2.15,<2.16
     - openblas
     - libgfortran
     - spglib
@@ -46,7 +46,7 @@ requirements:
     - matplotlib-base>=2.2.2
     - pyyaml
     - h5py
-    - phonopy>=2.13,<2.14
+    - phonopy>=2.15,<2.16
     - openblas
     - libgfortran
     - spglib
diff --git a/requirements.txt b/requirements.txt
index 8f8e1a11..a2df5212 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@ numpy >= 1.15.0
 PyYAML
 matplotlib >= 2.2.2
 h5py
-phonopy >=2.14,<2.15
+phonopy >=2.15,<2.16
diff --git a/setup.py b/setup.py
index f7da1b06..0dc70d50 100644
--- a/setup.py
+++ b/setup.py
@@ -198,7 +198,7 @@ if __name__ == "__main__":
             "matplotlib>=2.2.2",
             "h5py",
             "spglib",
-            "phonopy>=2.14,<2.15",
+            "phonopy>=2.15,<2.16",
         ],
         provides=["phono3py"],
         scripts=scripts_phono3py,