diff --git a/share/ruby-build/2.6.0-dev b/share/ruby-build/2.6.0-dev
index b0a6623205..19f1e42227 100644
--- a/share/ruby-build/2.6.0-dev
+++ b/share/ruby-build/2.6.0-dev
@@ -1,2 +1,2 @@
 install_package "openssl-1.1.0j" "https://www.openssl.org/source/openssl-1.1.0j.tar.gz#31bec6c203ce1a8e93d5994f4ed304c63ccf07676118b6634edded12ad1b3246" mac_openssl --if has_broken_mac_openssl
-install_git "ruby-trunk" "https://github.com/ruby/ruby.git" "trunk" ldflags_dirs autoconf standard_build standard_install_with_bundled_gems verify_openssl
+install_git "ruby-2.6.0-dev" "https://github.com/ruby/ruby.git" "ruby_2_6" ldflags_dirs autoconf standard_build standard_install_with_bundled_gems verify_openssl
diff --git a/share/ruby-build/2.7.0-dev b/share/ruby-build/2.7.0-dev
new file mode 100644
index 0000000000..b0a6623205
--- /dev/null
+++ b/share/ruby-build/2.7.0-dev
@@ -0,0 +1,2 @@
+install_package "openssl-1.1.0j" "https://www.openssl.org/source/openssl-1.1.0j.tar.gz#31bec6c203ce1a8e93d5994f4ed304c63ccf07676118b6634edded12ad1b3246" mac_openssl --if has_broken_mac_openssl
+install_git "ruby-trunk" "https://github.com/ruby/ruby.git" "trunk" ldflags_dirs autoconf standard_build standard_install_with_bundled_gems verify_openssl