diff --git a/gnu/packages/backup.scm b/gnu/packages/backup.scm
index cfeaa207be..7302406c57 100644
--- a/gnu/packages/backup.scm
+++ b/gnu/packages/backup.scm
@@ -264,49 +264,47 @@ (define libarchive-3.3.2
 (define-public rdup
   (package
     (name "rdup")
-    (version "1.1.14")
+    (version "1.1.15")
     (source
      (origin
        (method url-fetch)
-       (uri (string-append "http://archive.miek.nl/projects/rdup/rdup-"
-                           version ".tar.bz2"))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (uri (string-append "https://github.com/miekg/rdup/archive/"
+                           version ".tar.gz"))
        (sha256
         (base32
-         "0aklwd9v7ix0m4ayl762sil685f42cwljzx3jz5skrnjaq32npmj"))
-       (modules '((guix build utils)))
-       (snippet
-        ;; Some test scripts are missing shebangs, which cause "could not
-        ;; execute" errors.  Add shebangs.
-        '(for-each
-          (lambda (testscript)
-            (with-atomic-file-replacement
-                (string-append "testsuite/rdup/" testscript)
-              (lambda (in out)
-                (begin
-                  (format out "#!/bin/sh\n" )
-                  (dump-port in out)))))
-          '("rdup.hardlink.helper"
-            "rdup.hardlink-strip.helper"
-            "rdup.hardlink-strip2.helper"
-            "rdup.pipeline.helper")))))
+         "1jr91hgcf0rrpanqlwws72ql9db6d6grs2i122ki1s4bx0vqqyvq"))))
     (build-system gnu-build-system)
     (native-inputs
-     `(("pkg-config" ,pkg-config)
+     `(("autoconf" ,autoconf)
+       ("automake" ,automake)
+       ("pkg-config" ,pkg-config)
+
+       ;; For tests.
        ("dejagnu" ,dejagnu)))
     (inputs
      `(("glib" ,glib)
        ("pcre" ,pcre)
        ("libarchive" ,libarchive)
+       ("mcrypt" ,mcrypt)
        ("nettle" ,nettle)))
     (arguments
      `(#:parallel-build? #f             ;race conditions
        #:phases
        (modify-phases %standard-phases
-         (add-before 'build 'remove-Werror
-           ;; rdup uses a deprecated function from libarchive
+         (add-after 'unpack 'bootstrap
            (lambda _
-             (substitute* "GNUmakefile"
-               (("^(CFLAGS=.*)-Werror" _ front) front))
+             (invoke "autoreconf")))
+         (add-before 'build 'qualify-inputs
+           (lambda* (#:key inputs #:allow-other-keys)
+             ;; This script is full of pitfalls.  Fix some that particularly
+             ;; affect Guix users & leave the rest as reader excercises.
+             (substitute* "rdup-simple"
+               ;; Use the input ‘mcrypt’, not whatever's in $PATH at run time.
+               (("([' ])mcrypt " all delimiter)
+                (string-append delimiter (which "mcrypt") " "))
+               ;; Avoid frivolous dependency on ‘which’ with a shell builtin.
+               (("which") "command -v"))
              #t))
          (add-before 'check 'pre-check
            (lambda _
@@ -314,7 +312,7 @@ (define-public rdup
              (substitute* "testsuite/rdup/rdup.rdup-up-t-with-file.exp"
                (("/bin/cat") (which "cat")))
              #t)))))
-    (home-page "http://archive.miek.nl/projects/rdup/index.html")
+    (home-page "https://github.com/miekg/rdup")
     (synopsis "Provide a list of files to backup")
     (description
      "Rdup is a utility inspired by rsync and the plan9 way of doing backups.