diff --git a/lib/github_import.rb b/lib/github_import.rb
index 3689949..533b031 100644
--- a/lib/github_import.rb
+++ b/lib/github_import.rb
@@ -2,6 +2,7 @@ require_relative 'cargo_import'
 require_relative 'import_helpers'
 require_relative 'npm_import'
 require_relative 'requests'
+require_relative 'ruby_gems_import'
 
 require 'base64'
 require 'json'
@@ -38,14 +39,21 @@ class GithubImport
       data['last_tag'] = tag_info
     end
 
-    if ['JavaScript', 'TypeScript'].include?(repo_info['language'])
+    if project.language == :ruby
+      gems = get_rubygems_releases(user, repo, project)
+      last_update = gems.map { |gem| gem.last_release_time }.sort.last
+
+      if last_update && (release.nil? || last_update > release['published_at'])
+        data['last_release'] = { 'published_at' => last_update }
+      end
+    elsif project.language == :js
       npm = get_npm_releases(user, repo, project)
       last_update = npm.map { |n| n.last_release_time }.sort.last
 
       if last_update && (release.nil? || last_update > release['published_at'])
         data['last_release'] = { 'published_at' => last_update }
       end
-    elsif repo_info['language'] == 'Rust'
+    elsif project.language == :rust
       crates = get_cargo_releases(user, repo, project)
       last_update = crates.map { |c| c.last_release_time }.sort.last
 
@@ -222,4 +230,30 @@ class GithubImport
 
     releases
   end
+
+  def get_rubygems_releases(user, repo, project)
+    response = get_response("https://api.github.com/repos/#{user}/#{repo}/contents")
+    raise FetchError.new(response) unless response.code.to_i == 200
+
+    gemspec_files = JSON.parse(response.body)
+      .select { |file| file['type'] == 'file' && file['name'].end_with?('.gemspec') }
+      .sort_by { |file| file['name'] }
+
+    releases = []
+
+    gemspec_files.each do |gemspec_file|
+      response = get_response(gemspec_file['url'])
+      raise FetchError.new(response) unless response.code.to_i == 200
+
+      details = JSON.parse(response.body)
+      gemspec = RubyGemsImport::Gemspec.new(Base64.decode64(details['content']))
+      next unless gemspec.name
+
+      if gem = RubyGemsImport.new.get_gem_info(gemspec.name)
+        releases << gem
+      end
+    end
+
+    releases
+  end
 end
diff --git a/lib/ruby_gems_import.rb b/lib/ruby_gems_import.rb
new file mode 100644
index 0000000..4b0dc32
--- /dev/null
+++ b/lib/ruby_gems_import.rb
@@ -0,0 +1,53 @@
+require_relative 'requests'
+
+require 'json'
+require 'time'
+require 'uri'
+
+class RubyGemsImport
+  include Requests
+
+  class Gemspec
+    def initialize(contents)
+      @contents = contents
+    end
+
+    def name
+      if @contents =~ /^\s*[a-zA-Z_][a-zA-Z0-9_]*\.name\s*=\s*('[^']+'|"[^"]+")/
+        return $1[1..-2]
+      end
+    end
+  end
+
+  class RemoteGem
+    def initialize(json)
+      @json = json
+    end
+
+    def name
+      @json['name']
+    end
+
+    def last_release_time
+      Time.parse(@json['version_created_at'])
+    end
+  end
+
+  def initialize
+    @@cache ||= {}
+  end
+
+  def get_gem_info(name)
+    encoded_name = URI.encode_www_form_component(name)
+    response = @@cache[name] || get_response("https://rubygems.org/api/v1/gems/#{encoded_name}.json")
+    @@cache[name] = response
+
+    if response.code.to_i == 200
+      RemoteGem.new(JSON.parse(response.body))
+    elsif response.code.to_i == 404
+      nil
+    else
+      raise FetchError.new(response)
+    end
+  end
+end
diff --git a/lib/tangled_import.rb b/lib/tangled_import.rb
index aaf0049..7724b28 100644
--- a/lib/tangled_import.rb
+++ b/lib/tangled_import.rb
@@ -2,6 +2,7 @@ require_relative 'cargo_import'
 require_relative 'import_helpers'
 require_relative 'npm_import'
 require_relative 'requests'
+require_relative 'ruby_gems_import'
 
 require 'didkit'
 require 'fileutils'
@@ -52,7 +53,15 @@ class TangledImport
 
     data['stars'] = get_stars(repo_record)
 
-    if project.language == :js
+    if project.language == :ruby
+      gems = get_rubygems_releases(repo_folder, project)
+      last_update = gems.map { |gem| gem.last_release_time }.sort.last
+      tag_date = tag_info && tag_info['committer_date']
+
+      if last_update && (tag_date.nil? || last_update > tag_date)
+        data['last_release'] = { 'published_at' => last_update }
+      end
+    elsif project.language == :js
       npm = get_npm_releases(repo_folder, project)
       last_update = npm.map { |n| n.last_release_time }.sort.last
 
@@ -190,4 +199,19 @@ class TangledImport
       releases
     end
   end
+
+  def get_rubygems_releases(repo_folder, project)
+    releases = []
+
+    Dir[File.join(repo_folder, '*.gemspec')].sort.each do |gemspec_file|
+      gemspec = RubyGemsImport::Gemspec.new(File.read(gemspec_file))
+      next unless gemspec.name
+
+      if gem = RubyGemsImport.new.get_gem_info(gemspec.name)
+        releases << gem
+      end
+    end
+
+    releases
+  end
 end