diff --git a/lib/mastodon/version.rb b/lib/mastodon/version.rb
index d94ace4114..689c6f3c04 100644
--- a/lib/mastodon/version.rb
+++ b/lib/mastodon/version.rb
@@ -33,11 +33,11 @@ module Mastodon
     end
 
     def repository
-      ENV.fetch('GITHUB_REPOSITORY', 'glitch-soc/mastodon')
+      ENV.fetch('GIT_REPOSITORY', false) || ENV.fetch('GITHUB_REPOSITORY', false) || 'treehouse/mastodon'
     end
 
     def source_base_url
-      ENV.fetch('SOURCE_BASE_URL', "https://github.com/#{repository}")
+      ENV.fetch('SOURCE_BASE_URL', "https://gitea.treehouse.systems/#{repository}")
     end
 
     # specify git tag or commit hash here
@@ -46,8 +46,13 @@ module Mastodon
     end
 
     def source_url
-      if source_tag
-        "#{source_base_url}/tree/#{source_tag}"
+      if source_tag && source_base_url =~ /gitea/
+        suffix = if !str[/\H/]
+                   "commit/#{source_tag}"
+                 else
+                   "branch/#{source_tag}"
+                 end
+        "#{source_base_url}/#{suffix}"
       else
         source_base_url
       end
diff --git a/spec/presenters/instance_presenter_spec.rb b/spec/presenters/instance_presenter_spec.rb
index f4c415d2f1..82aff5fa2c 100644
--- a/spec/presenters/instance_presenter_spec.rb
+++ b/spec/presenters/instance_presenter_spec.rb
@@ -87,8 +87,8 @@ describe InstancePresenter do
   end
 
   describe '#source_url' do
-    it 'returns "https://github.com/glitch-soc/mastodon"' do
-      expect(instance_presenter.source_url).to eq('https://github.com/glitch-soc/mastodon')
+    it 'returns the default URL' do
+      expect(instance_presenter.source_url).to eq('https://gitea.treehouse.systems/treehouse/mastodon')
     end
   end