diff --git a/environment.yml b/environment.yml
index b66eb0def..2892770ce 100644
--- a/environment.yml
+++ b/environment.yml
@@ -29,7 +29,7 @@ dependencies:
   - pip
   - pooch >= 1.9.0  # min needed for https://github.com/fatiando/pooch/issues/502
   - py3dmol
-  - pydantic >= 2.0.0, <2.12.0  # https://github.com/openforcefield/openff-interchange/issues/1346
+  # - pydantic >= 2.0.0, <2.12.0  # https://github.com/openforcefield/openff-interchange/issues/1346
   - pygraphviz
   - pytest
   - pytest-xdist
@@ -52,7 +52,12 @@ dependencies:
   # Control blas/openmp threads
   - threadpoolctl
   - pip:
-    - git+https://github.com/OpenFreeEnergy/gufe@main
+    - git+https://github.com/OpenFreeEnergy/gufe@maint/pydantic_3.13
+    - git+https://github.com/openforcefield/openff-units/@define-pydantic-schema
+    - git+https://github.com/openforcefield/openff-interchange/@fix-pydantic
+    - pydantic==2.13.*
+
+
   - run_constrained:
     # drop this pin when handled upstream in espaloma-feedstock
     - smirnoff99frosst>=1.1.0.1  #https://github.com/openforcefield/smirnoff99Frosst/issues/109