diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index 33de0bdc..e4e56c74 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -5,7 +5,7 @@ dependencies:
 - coverage
 - numpy =1.26.4
 - scipy =1.13.0
-- spglib =2.3.1
+- spglib =2.4.0
 - phonopy =2.22.1
 - structuretoolkit =0.0.22
 - seekpath =2.1.0
diff --git a/binder/environment.yml b/binder/environment.yml
index 5f19a51b..e0e3a172 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -5,7 +5,7 @@ dependencies:
 - coverage
 - numpy =1.26.4
 - scipy =1.13.0
-- spglib =2.3.1
+- spglib =2.4.0
 - phonopy =2.22.1
 - structuretoolkit =0.0.22
 - seekpath =2.1.0
diff --git a/pyproject.toml b/pyproject.toml
index 55e2ae87..9f45b859 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ dependencies = [
     "ase==3.22.1",
     "numpy==1.26.4",
     "scipy==1.13.0",
-    "spglib==2.3.1",
+    "spglib==2.4.0",
 ]
 dynamic = ["version"]