diff --git a/.conda/base/recipe.yaml b/.conda/base/recipe.yaml
index fd20564b..9b270a44 100644
--- a/.conda/base/recipe.yaml
+++ b/.conda/base/recipe.yaml
@@ -46,7 +46,9 @@ requirements:
   - jinja2
   - requests
   - uvicorn
-  - opcua # [not osx]
+  - if: not osx
+    then:
+    - opcua
   - pyserial
   - pandas
   - pymodbus