diff --git a/Gemfile b/Gemfile
index 5df5cc6e4..e0a15fa92 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source "https://rubygems.org"
+source "https://gem.coop"
 
 gemspec
 
diff --git a/Gemfile-rspec-dependencies b/Gemfile-rspec-dependencies
index e68e5fdb8..9951f29ab 100644
--- a/Gemfile-rspec-dependencies
+++ b/Gemfile-rspec-dependencies
@@ -4,6 +4,6 @@ branch = File.read(File.expand_path("../maintenance-branch", __FILE__)).chomp
   if File.exist?(library_path) && !ENV['USE_GIT_REPOS']
     gem lib, path: library_path, require: false
   else
-    gem lib, git: "https://github.com/rspec/rspec", glob: "#{lib}/#{lib}.gemspec"
+    gem lib, git: "https://github.com/rspec/rspec", glob: "#{lib}/#{lib}.gemspec", branch: branch
   end
 end
diff --git a/maintenance-branch b/maintenance-branch
index ba2906d06..a71b13e28 100644
--- a/maintenance-branch
+++ b/maintenance-branch
@@ -1 +1 @@
-main
+3-13-maintenance