diff --git a/gnu/packages/bioconductor.scm b/gnu/packages/bioconductor.scm
index 9502fb43b1..25ad338c6f 100644
--- a/gnu/packages/bioconductor.scm
+++ b/gnu/packages/bioconductor.scm
@@ -24384,7 +24384,7 @@ (define-public r-catalyst
             r-singlecellexperiment
             r-summarizedexperiment))
     (native-inputs
-     (list r-knitr r-testthat))
+     (list r-diffcyt r-knitr r-testthat))
     (home-page "https://github.com/HelenaLC/CATALYST")
     (synopsis "Cytometry data analysis tools")
     (description