diff --git a/Rakefile b/Rakefile
index 74e59bfcd..41d83e605 100644
--- a/Rakefile
+++ b/Rakefile
@@ -20,7 +20,8 @@ task :test do
                               url_ignore: [%r{https://github.com/github/choosealicense.com/edit/gh-pages/_licenses/},
                                            %r{https://help.github.com},
                                            %r{https://opensource.org},
-                                           %r{https://git.savannah.gnu.org}],
+                                           %r{https://git.savannah.gnu.org},
+                                           %r{https://www.gnu.org/licenses/license-recommendations.html}],
                               hydra: { max_concurrency: 10 },
                               check_img_http: true).run
 end
diff --git a/_licenses/gfdl-1.3.txt b/_licenses/gfdl-1.3.txt
index 30e01e9d4..29366c51d 100644
--- a/_licenses/gfdl-1.3.txt
+++ b/_licenses/gfdl-1.3.txt
@@ -10,8 +10,8 @@ how: Create a text file (typically named COPYING, as per GNU conventions) in the
 note: The Free Software Foundation recommends taking the additional step of adding a boilerplate notice after the title of a licensed document. The boilerplate can be found at the "addendum" part of the license.
 
 using:
-  GNU LilyPond (Documentation): https://git.savannah.gnu.org/cgit/lilypond.git/tree/COPYING.FDL
-  GNU Scientific Library (Documentation): https://git.savannah.gnu.org/cgit/gsl.git/tree/doc/_static/fdl.txt
+  Mastodon (Documentation): https://github.com/mastodon/documentation/blob/main/LICENSE
+  Regular Expression Museum: https://github.com/thaliaarchi/regexp-museum/blob/main/LICENSE
   Qt (Documentation): https://code.qt.io/cgit/qt/qt.git/tree/LICENSE.FDL
   
 permissions: