diff --git a/dev-ruby/regexp_parser/regexp_parser-0.3.1.ebuild b/dev-ruby/regexp_parser/regexp_parser-0.3.1.ebuild
index 297f9d07c3602..5b5823eaae7b0 100644
--- a/dev-ruby/regexp_parser/regexp_parser-0.3.1.ebuild
+++ b/dev-ruby/regexp_parser/regexp_parser-0.3.1.ebuild
@@ -19,3 +19,7 @@ LICENSE="MIT"
 SLOT="0"
 KEYWORDS="~amd64 ~arm ~x86"
 IUSE=""
+
+all_ruby_prepare() {
+	sed -i -e '/bundler/I s:^:#:' Rakefile || die
+}