diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index bed871e6ae..96b6b1f149 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -23428,6 +23428,7 @@ who want to include run-time testing features in their own packages.")
     (build-system r-build-system)
     (propagated-inputs
      (list r-assertive-base))
+    (native-inputs (list r-testthat))
     (home-page "https://bitbucket.org/richierocks/assertive.sets")
     (synopsis "Assertions to check properties of sets")
     (description