diff --git a/glfm_specification/output_example_snapshots/html.yml b/glfm_specification/output_example_snapshots/html.yml
index a16ee2e7200202c8366e8b3847cfc4a9c858799e..bdd0777ce17ee56b4b7bef518ca6897099767f3b 100644
--- a/glfm_specification/output_example_snapshots/html.yml
+++ b/glfm_specification/output_example_snapshots/html.yml
@@ -7921,7 +7921,7 @@
canonical: |
<p><a href="projects-test-file">projects-test-file</a></p>
static: |-
- <p data-sourcepos="1:1-1:40" dir="auto"><a href="/glfm_group/glfm_project/-/blob/master/projects-test-file">projects-test-file</a></p>
+ <p data-sourcepos="1:1-1:40" dir="auto"><a href="/glfm_group/glfm_project/-/blob/master/projects-test-file" class="gfm">projects-test-file</a></p>
08_03_00__gitlab_internal_extension_markdown__markdown_preview_api_request_overrides__003:
canonical: |
<p>This project snippet ID reference IS filtered: $88888</p>
diff --git a/lib/banzai/filter/repository_link_filter.rb b/lib/banzai/filter/repository_link_filter.rb
index f5cf1833304c63434573b33c75e2c653573813bf..e95da7356472c2d471756630464b5364202ea03d 100644
--- a/lib/banzai/filter/repository_link_filter.rb
+++ b/lib/banzai/filter/repository_link_filter.rb
@@ -101,6 +101,7 @@ def process_link_to_repository_attr(html_attr)
if uri.relative? && uri.path.present?
html_attr.value = rebuild_relative_uri(uri).to_s
+ html_attr.parent.add_class('gfm')
end
rescue URI::Error, Addressable::URI::InvalidURIError
# noop
diff --git a/spec/scripts/lib/glfm/update_example_snapshots_spec.rb b/spec/scripts/lib/glfm/update_example_snapshots_spec.rb
index f28a33045ffb738c382a6adf11ac8a697de3728e..58e016b6d68b13a6aad35ad1c0e0703d04f39495 100644
--- a/spec/scripts/lib/glfm/update_example_snapshots_spec.rb
+++ b/spec/scripts/lib/glfm/update_example_snapshots_spec.rb
@@ -685,7 +685,7 @@
canonical: |
<p><a href="projects-test-file">projects-test-file</a></p>
static: |-
- <p data-sourcepos="1:1-1:40" dir="auto"><a href="/glfm_group/glfm_project/-/blob/master/projects-test-file">projects-test-file</a></p>
+ <p data-sourcepos="1:1-1:40" dir="auto"><a href="/glfm_group/glfm_project/-/blob/master/projects-test-file" class="gfm">projects-test-file</a></p>
wysiwyg: |-
<p><a target="_blank" rel="noopener noreferrer nofollow" href="projects-test-file">projects-test-file</a></p>
06_03_00__api_request_overrides__project_snippet_ref__001: