diff --git a/devtools/conda-envs/openeye.yaml b/devtools/conda-envs/openeye.yaml
index 08f9aec28..abd25875f 100644
--- a/devtools/conda-envs/openeye.yaml
+++ b/devtools/conda-envs/openeye.yaml
@@ -5,7 +5,6 @@ channels:
 dependencies:
     # Base depends
   - python
-  - pydantic
   - packaging
   - numpy
   - networkx
diff --git a/devtools/conda-envs/rdkit-examples.yaml b/devtools/conda-envs/rdkit-examples.yaml
index 6e6fe4783..93bc94c6c 100644
--- a/devtools/conda-envs/rdkit-examples.yaml
+++ b/devtools/conda-envs/rdkit-examples.yaml
@@ -4,7 +4,6 @@ channels:
 dependencies:
     # Base depends
   - python
-  - pydantic =1
   - packaging
   - numpy
   - networkx
diff --git a/devtools/conda-envs/rdkit.yaml b/devtools/conda-envs/rdkit.yaml
index 6ba2665a1..392e373f2 100644
--- a/devtools/conda-envs/rdkit.yaml
+++ b/devtools/conda-envs/rdkit.yaml
@@ -4,7 +4,6 @@ channels:
 dependencies:
     # Base depends
   - python
-  - pydantic =1
   - packaging
   - numpy
   - networkx
@@ -33,4 +32,4 @@ dependencies:
   - pyyaml
   - toml
   - bson
-  - msgpack-python
\ No newline at end of file
+  - msgpack-python
diff --git a/openff/toolkit/_tests/test_molecule.py b/openff/toolkit/_tests/test_molecule.py
index cf20017a4..5de3ccf62 100644
--- a/openff/toolkit/_tests/test_molecule.py
+++ b/openff/toolkit/_tests/test_molecule.py
@@ -3676,7 +3676,6 @@ def test_deepcopy_not_shallow(self):
 
 @requires_pkg("IPython")
 class TestMoleculeVisualization:
-
     @requires_rdkit
     def test_visualize_rdkit(self):
         """