diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index 2e0937be3..9605da998 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -3,7 +3,7 @@ channels:
 - conda-forge
 dependencies:
 - aimsgb =1.1.1
-- ase =3.27.0
+- ase =3.28.0
 - coverage
 - dscribe =2.1.2
 - matplotlib-base =3.10.8
diff --git a/.ci_support/environment_mini.yml b/.ci_support/environment_mini.yml
index fbb218085..c5e5a4896 100644
--- a/.ci_support/environment_mini.yml
+++ b/.ci_support/environment_mini.yml
@@ -1,7 +1,7 @@
 channels:
 - conda-forge
 dependencies:
-- ase =3.27.0
+- ase =3.28.0
 - coverage
 - numpy =2.3.5
 - scipy =1.17.0
diff --git a/pyproject.toml b/pyproject.toml
index 9613b2fa6..339cc92bc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ classifiers = [
     "Programming Language :: Python :: 3.13",
 ]
 dependencies = [
-    "ase==3.27.0",
+    "ase==3.28.0",
     "numpy==2.3.5",
     "scipy==1.17.0",
 ]