diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index c58fb76a0b..924f94f54a 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -639,13 +639,13 @@ (define-public r-matrix-utils
 (define-public r-mboost
   (package
    (name "r-mboost")
-   (version "2.9-3")
+   (version "2.9-4")
    (source (origin
             (method url-fetch)
             (uri (cran-uri "mboost" version))
             (sha256
              (base32
-              "1qp5c43kc0939sss5w3hhn794lbi69wgfsa31sq4c8vzh35pjqmf"))))
+              "1dgyc38axfk2a430wsdnnk76xikizkyxf5r0l1kbp6cacrx6idz0"))))
    (build-system r-build-system)
    (propagated-inputs
     `(("r-lattice" ,r-lattice)