diff --git a/bin/rails b/bin/rails
index 9914fc1..26266c7 100755
--- a/bin/rails
+++ b/bin/rails
@@ -25,7 +25,7 @@ end
 if items.empty?
   items = search.versions.map do |version|
     {
-      uid: search.uid,
+      uid: SecureRandom.uuid,
       type: 'default',
       arg: query,
       subtitle: "Search #{version} #{search.query}",
diff --git a/lib/file_cache.rb b/lib/file_cache.rb
index ce57222..a1ffcf6 100644
--- a/lib/file_cache.rb
+++ b/lib/file_cache.rb
@@ -10,9 +10,9 @@
 class FileCache
   class Error < StandardError; end
 
+  VERSION = '1'.freeze
   CACHE_DIR = "#{ENV['TMPDIR'] || ENV['TMP'] || ENV['TEMP']}ruby_and_rails_api_docs_#{VERSION}".freeze
   MAX_EXPIRES_IN = 60 * 60 * 24 * 30 # 1 month
-  VERSION = '1'.freeze
 
   attr_reader :key, :expires_in, :compress, :dir_path
 
diff --git a/lib/rails_search_doc.rb b/lib/rails_search_doc.rb
index addb839..4da2c81 100644
--- a/lib/rails_search_doc.rb
+++ b/lib/rails_search_doc.rb
@@ -28,6 +28,10 @@ def title
       "v#{version} #{klass}"
     end
 
+    def uid
+      Base64.encode64(title).strip
+    end
+    
     def description
       self[:description].gsub!(/<\S+>/, '')
       presence(self[:description])