diff --git a/.ci_support/environment-docs.yml b/.ci_support/environment-docs.yml
index a43c37b2..ef4f3f7e 100644
--- a/.ci_support/environment-docs.yml
+++ b/.ci_support/environment-docs.yml
@@ -7,7 +7,7 @@ dependencies:
   - numpy
   - ase =3.22.1
   - coverage
-  - numpy =1.26.0
+  - numpy =1.26.2
   - scipy =1.11.4
   - spglib =2.1.0
   - phonopy =2.20.0
diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index 072c6255..db143630 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -3,7 +3,7 @@ channels:
 dependencies:
 - ase =3.22.1
 - coverage
-- numpy =1.26.0
+- numpy =1.26.2
 - scipy =1.11.4
 - spglib =2.1.0
 - phonopy =2.20.0