diff --git a/.binder/environment.yml b/.binder/environment.yml
index 12fec6af..4e061ec4 100644
--- a/.binder/environment.yml
+++ b/.binder/environment.yml
@@ -17,7 +17,7 @@ dependencies:
 - pyiron_atomistics = 0.2.63
 - pyiron_base =0.5.33
 - pyiron_gui =0.0.8
-- pyiron_ontology =0.1.3
+- pyiron_ontology =0.2.7
 - pymatgen =2023.5.10
 - ryvencore =0.3.1.1
 - seaborn =0.13.2
diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index d024dd12..09b1e9d8 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -1,24 +1,24 @@
 channels:
-  - conda-forge
+- conda-forge
 dependencies:
-  - python >=3.10,<3.12
-  - aimsgb =0.1.3
-  - ipycanvas =0.13.2
-  - ipython =8.24.0
-  - ipywidgets =7.7.1
-  - jupyterlab =3.6.7
-  - matplotlib =3.8.4
-  - nglview =3.0.8
-  - numpy =1.26.4
-  - openjdk =22.0.1
-  - owlready2 =0.46
-  - pandas =1.5.3
-  - pyiron-data =0.0.27
-  - pyiron_atomistics = 0.2.63
-  - pyiron_base =0.5.33
-  - pyiron_gui =0.0.8
-  - pyiron_ontology =0.1.3
-  - pymatgen =2023.5.10
-  - ryvencore =0.3.1.1
-  - seaborn =0.13.2
-  - traitlets =5.14.3
+- python >=3.10,<3.12
+- aimsgb =0.1.3
+- ipycanvas =0.13.2
+- ipython =8.24.0
+- ipywidgets =7.7.1
+- jupyterlab =3.6.7
+- matplotlib =3.8.4
+- nglview =3.0.8
+- numpy =1.26.4
+- openjdk =22.0.1
+- owlready2 =0.46
+- pandas =1.5.3
+- pyiron-data =0.0.27
+- pyiron_atomistics = 0.2.63
+- pyiron_base =0.5.33
+- pyiron_gui =0.0.8
+- pyiron_ontology =0.2.7
+- pymatgen =2023.5.10
+- ryvencore =0.3.1.1
+- seaborn =0.13.2
+- traitlets =5.14.3
diff --git a/docs/environment.yml b/docs/environment.yml
index 39098975..80ef1989 100644
--- a/docs/environment.yml
+++ b/docs/environment.yml
@@ -23,7 +23,7 @@ dependencies:
 - pyiron_atomistics = 0.2.63
 - pyiron_base =0.5.33
 - pyiron_gui =0.0.8
-- pyiron_ontology =0.1.3
+- pyiron_ontology =0.2.7
 - pymatgen =2023.5.10
 - ryvencore =0.3.1.1
 - seaborn =0.13.2
diff --git a/setup.py b/setup.py
index b2ef03f6..5baccf2d 100644
--- a/setup.py
+++ b/setup.py
@@ -42,7 +42,7 @@
         'pyiron_atomistics == 0.2.63',
         'pyiron_base ==0.5.33',
         'pyiron_gui <=0.0.8',
-        'pyiron_ontology ==0.1.3',
+        'pyiron_ontology ==0.2.7',
         'pymatgen ==2023.5.10',
         'ryvencore ==0.3.1.1',
         'seaborn ==0.13.2',