diff --git a/Gemfile.lock b/Gemfile.lock
index 603daf59..26dbfc5c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -58,7 +58,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.3)
     crass (1.0.4)
     diff-lcs (1.3)
     erubi (1.7.1)
@@ -119,7 +119,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     puma (3.11.4)
-    rack (2.0.5)
+    rack (2.0.6)
     rack-proxy (0.6.4)
       rack
     rack-test (1.0.0)
@@ -191,7 +191,7 @@ GEM
     spring-watcher-listen (2.0.1)
       listen (>= 2.7, < 4.0)
       spring (>= 1.2, < 3.0)
-    sprockets (3.7.1)
+    sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-rails (3.2.1)