diff --git a/requirements.txt.full b/requirements.txt.full
index cf6e328b..b19ceb84 100644
--- a/requirements.txt.full
+++ b/requirements.txt.full
@@ -5,6 +5,7 @@ linkml
 babelon
 dosdp
 semsql
+semsimian
 
 # Secondary dependencies
 click