diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index 49c7ea9b9..1202b5724 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -9,7 +9,7 @@ dependencies:
 - matplotlib-base =3.9.1
 - nglview =3.1.2
 - notebook
-- numpy =1.26.4
+- numpy =2.0.0
 - phonopy =2.26.5
 - plotly =5.22.0
 - pymatgen =2024.6.10
diff --git a/.ci_support/environment_mini.yml b/.ci_support/environment_mini.yml
index ddd37cc33..1d4cb8192 100644
--- a/.ci_support/environment_mini.yml
+++ b/.ci_support/environment_mini.yml
@@ -3,5 +3,5 @@ channels:
 dependencies:
 - ase =3.23.0
 - coverage
-- numpy =1.26.4
+- numpy =2.0.0
 - scipy =1.14.0
diff --git a/pyproject.toml b/pyproject.toml
index b6b5fb752..4064f6b44 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ classifiers = [
 ]
 dependencies = [
     "ase==3.23.0",
-    "numpy==1.26.4",
+    "numpy==2.0.0",
     "scipy==1.14.0",
 ]
 dynamic = ["version"]