diff --git a/Gemfile b/Gemfile
index 5a7c0cea4f8..2f8aeb8e342 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'middleman', '~> 4.4'
 gem 'middleman-syntax', '~> 3.2'
 gem 'middleman-autoprefixer', '~> 3.0'
 gem 'middleman-sprockets', '~> 4.1'
-gem 'sprockets', '~> 3.7'
+gem 'sprockets', '~> 4.4'
 gem 'middleman-data_source'
 gem 'rouge', '~> 3.21'
 gem 'redcarpet', '~> 3.6.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 391a44e4fa3..0f0b6128521 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,7 +26,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.8)
     contracts (0.17.3)
     dotenv (3.2.0)
     drb (2.2.3)
@@ -118,7 +118,7 @@ GEM
     prism (1.9.0)
     public_suffix (7.0.2)
     racc (1.8.1)
-    rack (2.2.22)
+    rack (2.2.24)
     rack-test (0.6.3)
       rack (>= 1.0)
     rb-fsevent (0.11.2)
@@ -136,10 +136,10 @@ GEM
       ffi (~> 1.9)
     securerandom (0.4.1)
     servolux (0.13.0)
-    sprockets (3.7.5)
-      base64
-      concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
+    sprockets (4.4.1)
+      concurrent-ruby (~> 1.1)
+      logger
+      rack (>= 2.2.4, < 4)
     temple (0.10.4)
     thor (1.5.0)
     tilt (2.0.11)
@@ -168,7 +168,7 @@ DEPENDENCIES
   redcarpet (~> 3.6.0)
   rouge (~> 3.21)
   sass
-  sprockets (~> 3.7)
+  sprockets (~> 4.4)
   webrick
 
 RUBY VERSION