diff --git a/README.md b/README.md
index 1655d5a..e1f9cbc 100644
--- a/README.md
+++ b/README.md
@@ -25,9 +25,10 @@ from GRASS Addons using GUI (Settings -> Addons extensions -> Install extension
 
     g.extension r.futures
 
-You will also need r.sample.category addon:
+You will also need these additional addons:
 
     g.extension r.sample.category
+    g.extension r.object.geometry
 
 To run r.futures.potential, you also need R (>= 3.5.0) and R packages MuMIn, lme4, optparse.
 Once you install R, run in R: