diff --git a/.ci_support/environment.yml b/.ci_support/environment.yml
index ffa3b87..5d0eac3 100644
--- a/.ci_support/environment.yml
+++ b/.ci_support/environment.yml
@@ -1,17 +1,16 @@
 channels:
-  - conda-forge
+- conda-forge
 dependencies:
-  - python>=3.11,<3.13
-  - pip
-  - numpy =1.26.4
-  - ase =3.26.0
-  - pymatgen =2025.6.14
-  - pyiron_workflow =0.15.2
-  - pyiron_lammps =0.4.6
-  - pandas =2.3.1
-  - lammps =2024.08.29
-  # If pyiron_snippets isn’t on conda-forge, install via pip below
-  - pysqa =0.3.0
-  - pip:
-      - pyiron-workflow-atomistics==0.0.4
-      - pyiron-snippets==0.2.0
\ No newline at end of file
+- python>=3.11,<3.13
+- pip
+- numpy =1.26.4
+- ase =3.26.0
+- pymatgen =2025.6.14
+- pyiron_workflow =0.15.2
+- pyiron_lammps =0.4.6
+- pandas =2.3.1
+- lammps =2024.08.29
+- pysqa =0.3.0
+- pip:
+  - pyiron-workflow-atomistics==0.0.4
+  - pyiron-snippets==0.2.0
diff --git a/pyproject.toml b/pyproject.toml
index aee98ee..926e149 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ dependencies = [
     "pandas==2.3.1",
     "pyiron-workflow==0.15.2",
     "pyiron-workflow-atomistics==0.0.4",
-    "pyiron-lammps==0.4.6",
+    "pyiron-lammps==0.4.9",
     "ase==3.26.0",
     "pymatgen==2025.6.14",
 ]