diff --git a/devtools/conda-envs/test_env.yaml b/devtools/conda-envs/test_env.yaml
index 22cae4f91..4b60877ef 100644
--- a/devtools/conda-envs/test_env.yaml
+++ b/devtools/conda-envs/test_env.yaml
@@ -19,7 +19,7 @@ dependencies:
   - swig
   - future
   - pymbar =3
-  - openmm >=7.6,<8
+  - openmm >= 8
   - ambertools
   - ndcctools
   - geometric