diff --git a/gnu/packages/ruby.scm b/gnu/packages/ruby.scm
index bff0d3c88d..ef101e900f 100644
--- a/gnu/packages/ruby.scm
+++ b/gnu/packages/ruby.scm
@@ -957,13 +957,13 @@ the SimpleCov code coverage tool for Ruby version 1.9 and above.")
 (define-public ruby-simplecov
   (package
     (name "ruby-simplecov")
-    (version "0.10.0")
+    (version "0.12.0")
     (source (origin
               (method url-fetch)
               (uri (rubygems-uri "simplecov" version))
               (sha256
                (base32
-                "1q2iq2vgrdvvla5y907gkmqx6ry2qvnvc7a90hlcbwgp1w0sv6z4"))))
+                "0ffhyrfnq2zm2mc1742a4hqy475g3qa1zf6yfldwg1ldh5sn3qbx"))))
     (build-system ruby-build-system)
     ;; Simplecov depends on rubocop for code style checking at build time.
     ;; Rubocop needs simplecov at build time.