diff --git a/gnu/packages/bioinformatics.scm b/gnu/packages/bioinformatics.scm
index a3f0d81d38..dd69e39bcc 100644
--- a/gnu/packages/bioinformatics.scm
+++ b/gnu/packages/bioinformatics.scm
@@ -2954,7 +2954,7 @@ sequencing tag position and orientation.")
 (define-public mafft
   (package
     (name "mafft")
-    (version "7.304")
+    (version "7.305")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -2963,7 +2963,7 @@ sequencing tag position and orientation.")
               (file-name (string-append name "-" version ".tgz"))
               (sha256
                (base32
-                "0jnciffkrsws3hw2mp8cs68mgciiz6glfbvgyasbk4na9vc00mi1"))))
+                "0ziim7g58n3z8gppsa713f5fxprl60ldj3xck186z0n9dpp06i8r"))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f ; no automated tests, though there are tests in the read me
@@ -3022,6 +3022,7 @@ sequencing tag position and orientation.")
              #t)))))
     (inputs
      `(("perl" ,perl)
+       ("ruby" ,ruby)
        ("gawk" ,gawk)
        ("grep" ,grep)
        ("coreutils" ,coreutils)))