diff --git a/.ci_support/environment-docs.yml b/.ci_support/environment-docs.yml
index 8b56a8f48..c908150b6 100644
--- a/.ci_support/environment-docs.yml
+++ b/.ci_support/environment-docs.yml
@@ -13,7 +13,7 @@ dependencies:
 - matplotlib-base =3.9.2
 - mendeleev =0.17.0
 - mp-api =0.42.1
-- numpy =1.26.4
+- numpy =2.1.0
 - pandas =2.2.2
 - phonopy =2.26.6
 - pint =0.24.3
diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index 774a3ef14..cf6a3fc0b 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -11,7 +11,7 @@ dependencies:
 - matplotlib-base =3.9.2
 - mendeleev =0.17.0
 - mp-api =0.42.1
-- numpy =1.26.4
+- numpy =2.1.0
 - pandas =2.2.2
 - phonopy =2.26.6
 - pint =0.24.3
diff --git a/binder/environment.yml b/binder/environment.yml
index 5d1fae1a5..19cebc313 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -9,7 +9,7 @@ dependencies:
 - matplotlib-base =3.9.2
 - mendeleev =0.17.0
 - mp-api =0.42.1
-- numpy =1.26.4
+- numpy =2.1.0
 - pandas =2.2.2
 - phonopy =2.26.6
 - pint =0.24.3