diff --git a/environment.yml b/environment.yml
index 3ced613..d8c8bfe 100644
--- a/environment.yml
+++ b/environment.yml
@@ -2,4 +2,7 @@ name: splitmsa
 channels:
   - conda-forge
 dependencies:
+  - build=0.7.0
+  - pytest=7.2.2
+  - twine=4.0.2
   - biopython=1.81