diff --git a/environment.yml b/environment.yml
index 3bca1b8..12ed8dd 100644
--- a/environment.yml
+++ b/environment.yml
@@ -13,4 +13,5 @@ dependencies:
   - mendeleev =0.17.0
   - lxml =4.9.4
   - ipython =8.25.0
-  - sqsgenerator =0.3
\ No newline at end of file
+  - sqsgenerator =0.3
+  - structuretoolkit =0.0.28