diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index 1f059e7e2b..deae0191af 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -19501,14 +19501,14 @@ multicore machines.")
 (define-public r-mcmcpack
   (package
     (name "r-mcmcpack")
-    (version "1.6-2")
+    (version "1.6-3")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "MCMCpack" version))
        (sha256
         (base32
-         "18nyncvgb75q8flndni99ldr7ynqhillphkj7ydsmfv5w8b0zvqp"))))
+         "1cwdjn43b9hxpxf9mnas583myhk6r2258mh57f0zsc8bd4hbl56b"))))
     (properties `((upstream-name . "MCMCpack")))
     (build-system r-build-system)
     (propagated-inputs