diff --git a/Gemfile.lock b/Gemfile.lock
index e40b515..afb50d7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,7 +22,7 @@ GEM
       public_suffix (>= 2.0.2, < 5.0)
     ast (2.4.2)
     concurrent-ruby (1.1.8)
-    coveralls_reborn (0.20.0)
+    coveralls_reborn (0.21.0)
       simplecov (>= 0.18.1, < 0.22.0)
       term-ansicolor (~> 1.6)
       thor (>= 0.20.3, < 2.0)