diff --git a/Gemfile.lock b/Gemfile.lock
index 25354f23..49957215 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,7 +29,7 @@ GEM
     benchmark (0.4.0)
     bigdecimal (3.1.9)
     coderay (1.1.3)
-    concurrent-ruby (1.3.4)
+    concurrent-ruby (1.3.5)
     connection_pool (2.4.1)
     crack (1.0.0)
       bigdecimal
@@ -194,7 +194,7 @@ CHECKSUMS
   benchmark (0.4.0) sha256=0f12f8c495545e3710c3e4f0480f63f06b4c842cc94cec7f33a956f5180e874a
   bigdecimal (3.1.9) sha256=2ffc742031521ad69c2dfc815a98e426a230a3d22aeac1995826a75dabfad8cc
   coderay (1.1.3) sha256=dc530018a4684512f8f38143cd2a096c9f02a1fc2459edcfe534787a7fc77d4b
-  concurrent-ruby (1.3.4) sha256=d4aa926339b0a86b5b5054a0a8c580163e6f5dcbdfd0f4bb916b1a2570731c32
+  concurrent-ruby (1.3.5) sha256=813b3e37aca6df2a21a3b9f1d497f8cbab24a2b94cab325bffe65ee0f6cbebc6
   connection_pool (2.4.1) sha256=0f40cf997091f1f04ff66da67eabd61a9fe0d4928b9a3645228532512fab62f4
   crack (1.0.0) sha256=c83aefdb428cdc7b66c7f287e488c796f055c0839e6e545fec2c7047743c4a49
   diff-lcs (1.5.1) sha256=273223dfb40685548436d32b4733aa67351769c7dea621da7d9dd4813e63ddfe