diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index 656a578..96e5d41 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -7,7 +7,7 @@ dependencies:
 - pyiron_base =0.10.2
 - pyiron_atomistics =0.6.13
 - maggma =0.60.2
-- numpy =1.26.4
+- numpy =2.1.1
 - pandas =2.2.3
 - matplotlib-base =3.9.2
 - nbconvert =7.16.4
diff --git a/setup.py b/setup.py
index 185ff49..521fde0 100644
--- a/setup.py
+++ b/setup.py
@@ -38,7 +38,7 @@
         'matplotlib==3.9.2',
         'nbconvert==7.16.4',
         'nbformat==5.10.4',
-        'numpy==1.26.4',
+        'numpy==2.1.1',
         'pandas==2.2.3',
     ],
     cmdclass=versioneer.get_cmdclass(),