diff --git a/Gemfile.lock b/Gemfile.lock
index 783058d..b66956b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -108,7 +108,7 @@ GEM
     code_analyzer (0.5.5)
       sexp_processor
     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)