diff --git a/Gemfile.lock b/Gemfile.lock
index f35f447..4c5c7f9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -59,7 +59,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.5)
     crass (1.0.5)
     erubis (2.7.0)
     execjs (2.7.0)
@@ -90,7 +90,7 @@ GEM
       net-ssh (>= 2.6.5)
     nokogiri (1.10.5)
       mini_portile2 (~> 2.4.0)
-    rack (1.6.9)
+    rack (1.6.11)
     rack-contrib (1.4.0)
       git-version-bump (~> 0.15)
       rack (~> 1.4)
@@ -128,7 +128,7 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
-    sprockets (3.7.1)
+    sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-rails (3.2.1)