diff --git a/devtools/conda-envs/alchemiscale-client.yml b/devtools/conda-envs/alchemiscale-client.yml
index c3abc819..163f4c65 100644
--- a/devtools/conda-envs/alchemiscale-client.yml
+++ b/devtools/conda-envs/alchemiscale-client.yml
@@ -5,11 +5,12 @@ channels:
   - openeye
 dependencies:
   - pip
-  - python =3.11
+  - python =3.10
 
   # alchemiscale dependencies
   - gufe=0.9.4
   - openfe=0.13.0
+  - openmmforcefields>=0.12.0
   - requests
   - click
   - httpx
diff --git a/devtools/conda-envs/alchemiscale-compute.yml b/devtools/conda-envs/alchemiscale-compute.yml
index d24f4e1c..a9d2cb7a 100644
--- a/devtools/conda-envs/alchemiscale-compute.yml
+++ b/devtools/conda-envs/alchemiscale-compute.yml
@@ -4,12 +4,13 @@ channels:
   - openeye
 dependencies:
   - pip
-  - python =3.11
+  - python =3.10
   - cudatoolkit <=11.7  # many actual compute resources are not yet compatible with cudatoolkit >=11.8
 
   # alchemiscale dependencies
   - gufe=0.9.4
   - openfe=0.13.0
+  - openmmforcefields>=0.12.0
   - requests
   - click
   - httpx
diff --git a/devtools/conda-envs/alchemiscale-server.yml b/devtools/conda-envs/alchemiscale-server.yml
index b0bd1534..b0da31bb 100644
--- a/devtools/conda-envs/alchemiscale-server.yml
+++ b/devtools/conda-envs/alchemiscale-server.yml
@@ -5,11 +5,12 @@ channels:
   - openeye
 dependencies:
   - pip
-  - python =3.11
+  - python =3.10
 
   # alchemiscale dependencies
   - gufe=0.9.4
   - openfe=0.13.0
+  - openmmforcefields>=0.12.0
   - requests
   - click
   - pydantic<2.0
diff --git a/devtools/conda-envs/test.yml b/devtools/conda-envs/test.yml
index 8d09243e..5bd0257f 100644
--- a/devtools/conda-envs/test.yml
+++ b/devtools/conda-envs/test.yml
@@ -55,7 +55,7 @@ dependencies:
   # needed for openfe-benchmark tests
   - lomap2>=2.1.0
   - openmmtools
-  - openmmforcefields
+  - openmmforcefields>=0.12.0
 
   - pip:
     - async_lru