diff --git a/devtools/conda-envs/test_env.yaml b/devtools/conda-envs/test_env.yaml
index 53f43ec..d3c28c6 100644
--- a/devtools/conda-envs/test_env.yaml
+++ b/devtools/conda-envs/test_env.yaml
@@ -13,6 +13,7 @@ dependencies:
   - optking
   - scipy
   - seamm
+  - seamm-installer
   - tabulate
 
   # Testing