diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index ce8d3ae262..ee87d82ddd 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -20981,7 +20981,7 @@ (define-public r-rcmdcheck
            r-sessioninfo
            r-withr
            r-xopen))
-    (native-inputs (list r-testthat))
+    (native-inputs (list r-mockery r-testthat r-webfakes))
     (home-page "https://github.com/r-Lib/rcmdcheck#readme")
     (synopsis "Run R CMD check from R and capture results")
     (description