diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index f90ab7864..253d06970 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -6,7 +6,7 @@ dependencies:
 - coverage
 - matplotlib-base =3.8.2
 - nglview =3.0.8
-- numpy =1.26.2
+- numpy =1.26.3
 - phonopy =2.21.0
 - plotly =5.18.0
 - pymatgen =2023.12.18
diff --git a/.ci_support/environment_mini.yml b/.ci_support/environment_mini.yml
index 19dce7637..ad9d0d49f 100644
--- a/.ci_support/environment_mini.yml
+++ b/.ci_support/environment_mini.yml
@@ -3,5 +3,5 @@ channels:
 dependencies:
 - ase =3.22.1
 - coverage
-- numpy =1.26.2
+- numpy =1.26.3
 - scipy =1.11.4
diff --git a/pyproject.toml b/pyproject.toml
index 6eaee21ac..4b9059f44 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ classifiers = [
 ]
 dependencies = [
     "ase==3.22.1",
-    "numpy==1.26.2",
+    "numpy==1.26.3",
     "scipy==1.11.4",
 ]
 dynamic = ["version"]