diff --git a/Gemfile.lock b/Gemfile.lock
index 912a75f..d3dbdf9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -116,7 +116,7 @@ GEM
     childprocess (5.1.0)
       logger (~> 1.5)
     coderay (1.1.3)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     connection_pool (3.0.2)
     crass (1.0.6)
     csv (3.3.5)
diff --git a/vendor/cache/concurrent-ruby-1.3.6.gem b/vendor/cache/concurrent-ruby-1.3.6.gem
deleted file mode 100644
index 5689df5..0000000
Binary files a/vendor/cache/concurrent-ruby-1.3.6.gem and /dev/null differ
diff --git a/vendor/cache/concurrent-ruby-1.3.7.gem b/vendor/cache/concurrent-ruby-1.3.7.gem
new file mode 100644
index 0000000..d7df695
Binary files /dev/null and b/vendor/cache/concurrent-ruby-1.3.7.gem differ