diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 3fc06869c9..19ed44f2c9 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -1669,14 +1669,14 @@ (define-public armadillo
 
 (define-public armadillo-for-rcpparmadillo
   (package (inherit armadillo)
-    (version "6.700.3")
+    (version "6.700.6")
     (source (origin
               (method url-fetch)
               (uri (string-append "mirror://sourceforge/arma/armadillo-"
                                   version ".tar.gz"))
               (sha256
                (base32
-                "1vnhifa7d0aij3kv5bxf6m91d99h3y2fyj48jrx7jcvwyb1q5wwq"))))))
+                "1cdpjxb0fz5f28y5qrqgpw53s7qi8s2v3al9lfdldqxngb21vpx8"))))))
 
 (define-public muparser
   (package
diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index c7bd0028d0..43f9042e9c 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -1647,13 +1647,13 @@ (define-public r-latticeextra
 (define-public r-rcpparmadillo
   (package
     (name "r-rcpparmadillo")
-    (version "0.6.700.3.0")
+    (version "0.6.700.6.0")
     (source (origin
               (method url-fetch)
               (uri (cran-uri "RcppArmadillo" version))
               (sha256
                (base32
-                "1mc62b6my568ni18w4clgs6l6ggqrwzsm3lgx0c1prf4rap69s8w"))
+                "0x736cjg1pbvn8c6h91c88qmmz4pddvvqg88k9c9kwhn24fjrra0"))
               (modules '((guix build utils)))
               ;; Remove bundled armadillo sources
               (snippet