diff --git a/Gemfile.lock b/Gemfile.lock
index 0f6fbd00096..ccc16381268 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -280,7 +280,7 @@ GEM
       openssl (~> 2.0)
     optimist (3.0.1)
     parallel (1.20.1)
-    parallel_tests (3.5.2)
+    parallel_tests (3.6.0)
       parallel
     parser (3.0.0.0)
       ast (~> 2.4.1)