diff --git a/Gemfile.lock b/Gemfile.lock
index 62b08cb..74219bb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,6 +4,7 @@ PATH
     asciidoctor-foodogsquared-extensions (1.0.0)
       asciidoctor (~> 2.0)
       open-uri-cached (~> 1.0)
+      rugged (~> 1.0)
 
 GEM
   remote: https://rubygems.org/
@@ -97,4 +98,4 @@ DEPENDENCIES
   tilt
 
 BUNDLED WITH
-   2.3.7
+   2.4.12
diff --git a/gems/asciidoctor-foodogsquared-extensions.gemspec b/gems/asciidoctor-foodogsquared-extensions.gemspec
index 5f18d65..60ac801 100644
--- a/gems/asciidoctor-foodogsquared-extensions.gemspec
+++ b/gems/asciidoctor-foodogsquared-extensions.gemspec
@@ -17,4 +17,5 @@ Gem::Specification.new do |s|
 
   s.add_runtime_dependency 'asciidoctor', '~> 2.0'
   s.add_runtime_dependency 'open-uri-cached', '~> 1.0'
+  s.add_runtime_dependency 'rugged', '~> 1.0'
 end
diff --git a/gemset.nix b/gemset.nix
index ea440fa..74b64e0 100644
--- a/gemset.nix
+++ b/gemset.nix
@@ -62,7 +62,7 @@
     version = "1.2023.5";
   };
   asciidoctor-foodogsquared-extensions = {
-    dependencies = ["asciidoctor" "open-uri-cached"];
+    dependencies = ["asciidoctor" "open-uri-cached" "rugged"];
     groups = ["default"];
     platforms = [];
     source = {