diff --git a/.binder/environment.yml b/.binder/environment.yml
index c5ea8e4..7060ae4 100644
--- a/.binder/environment.yml
+++ b/.binder/environment.yml
@@ -1,4 +1,4 @@
 channels:
 - conda-forge
 dependencies:
-- pyiron_base =0.8.3
+- pyiron_base =0.9.1
diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index deed6b5..7060ae4 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -1,5 +1,4 @@
 channels:
-  - conda-forge
+- conda-forge
 dependencies:
-  - pyiron_base =0.8.3
-  
+- pyiron_base =0.9.1
diff --git a/docs/environment.yml b/docs/environment.yml
index 33efb13..2c46533 100644
--- a/docs/environment.yml
+++ b/docs/environment.yml
@@ -7,4 +7,4 @@ dependencies:
 - sphinx-gallery
 - sphinx-rtd-theme
 - versioneer
-- pyiron_base =0.8.3
+- pyiron_base =0.9.1
diff --git a/pyproject.toml b/pyproject.toml
index f7ca374..6970f74 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
 ]
 dependencies = [
-    "pyiron_base==0.8.3"
+    "pyiron_base==0.9.1"
 ]
 dynamic = [ "version",]
 authors = [