diff --git a/environment-dev.yml b/environment-dev.yml
index bac0d14..a4b2769 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -11,3 +11,5 @@ dependencies:
   - cosapp
   - numpy
   - cosapp_fmu
+  - pyoccad
+  - pythonocc-core