diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index 894cbe3a8..7fe004f54 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -9,7 +9,7 @@ dependencies:
 - h5py =3.9.0
 - matplotlib-base =3.7.2
 - mendeleev =0.14.0
-- mp-api =0.33.3
+- mp-api =0.34.3
 - numpy =1.24.3
 - pandas =2.0.3
 - phonopy =2.20.0
diff --git a/setup.py b/setup.py
index 220e13fa7..c4f3e599a 100644
--- a/setup.py
+++ b/setup.py
@@ -47,7 +47,7 @@
         'h5py==3.9.0',
         'matplotlib==3.7.2',
         'mendeleev==0.14.0',
-        'mp-api==0.33.3',
+        'mp-api==0.34.3',
         'numpy==1.24.3',
         'pandas==2.0.3',
         'phonopy==2.20.0',