diff --git a/assets/javascripts/templates/pages/about_tmpl.coffee b/assets/javascripts/templates/pages/about_tmpl.coffee
index d054f21a..c0305f2d 100644
--- a/assets/javascripts/templates/pages/about_tmpl.coffee
+++ b/assets/javascripts/templates/pages/about_tmpl.coffee
@@ -838,7 +838,7 @@ credits = [
     'https://raw.githubusercontent.com/Microsoft/TypeScript-Handbook/master/LICENSE'
   ], [
     'Underscore.js',
-    '2009-2020 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors',
+    '2009-2021 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors',
     'MIT',
     'https://raw.githubusercontent.com/jashkenas/underscore/master/LICENSE'
   ], [
diff --git a/lib/docs/scrapers/underscore.rb b/lib/docs/scrapers/underscore.rb
index 00004759..1c517bc9 100644
--- a/lib/docs/scrapers/underscore.rb
+++ b/lib/docs/scrapers/underscore.rb
@@ -3,7 +3,7 @@ module Docs
     self.name = 'Underscore.js'
     self.slug = 'underscore'
     self.type = 'underscore'
-    self.release = '1.12.0'
+    self.release = '1.13.1'
     self.base_url = 'https://underscorejs.org'
     self.links = {
       home: 'https://underscorejs.org',
@@ -17,7 +17,7 @@ module Docs
     options[:skip_links] = true
 
     options[:attribution] = <<-HTML
-      &copy; 2009&ndash;2020 Jeremy Ashkenas, DocumentCloud and Investigative Reporters &amp; Editors<br>
+      &copy; 2009&ndash;2021 Jeremy Ashkenas, DocumentCloud and Investigative Reporters &amp; Editors<br>
       Licensed under the MIT License.
     HTML