diff --git a/recipes/recipes_emscripten/xeus-r/recipe.yaml b/recipes/recipes_emscripten/xeus-r/recipe.yaml
index f9b0a63de..c1c086292 100644
--- a/recipes/recipes_emscripten/xeus-r/recipe.yaml
+++ b/recipes/recipes_emscripten/xeus-r/recipe.yaml
@@ -43,6 +43,7 @@ requirements:
   - r-htmltools
   - r-munsell >=0.5.1
   - r-colorspace
+  - r-r6
 
 tests:
 - package_contents: