diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index a0b32eacf..4baeb9c1f 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -15,7 +15,7 @@ dependencies:
 - pandas =2.1.0
 - phonopy =2.20.0
 - pint =0.22
-- pyiron_base =0.6.4
+- pyiron_base =0.6.5
 - pyscal =2.10.18
 - scikit-learn =1.3.0
 - scipy =1.11.2
diff --git a/setup.py b/setup.py
index b9bd50e9a..b4e6d83bc 100644
--- a/setup.py
+++ b/setup.py
@@ -53,7 +53,7 @@
         'pandas==2.1.0',
         'phonopy==2.20.0',
         'pint==0.22',
-        'pyiron_base==0.6.4',
+        'pyiron_base==0.6.5',
         'scipy==1.11.2',
         'seekpath==2.1.0',
         'scikit-learn==1.3.0',