diff --git a/Gemfile.lock b/Gemfile.lock
index 247ca43..d5f0a95 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -105,7 +105,7 @@ GEM
       forwardable-extended (~> 2.6)
     public_suffix (4.0.7)
     racc (1.6.0)
-    rack (2.2.3)
+    rack (3.0.3)
     rainbow (3.1.1)
     rb-fsevent (0.11.1)
     rb-inotify (0.10.1)
@@ -120,9 +120,9 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.7)
     sassc (2.4.0)
       ffi (~> 1.9)
-    sprockets (4.0.3)
+    sprockets (4.2.0)
       concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
+      rack (>= 2.2.4, < 4)
     thread_safe (0.3.6)
     typhoeus (1.4.0)
       ethon (>= 0.9.0)