diff --git a/Gemfile.lock b/Gemfile.lock
index e1c49c08a7..82af2b5db6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -244,7 +244,7 @@ GEM
       sanitize
     openssl-signature_algorithm (1.0.0)
     optimist (3.0.1)
-    parallel (1.19.2)
+    parallel (1.20.0)
     parallel_tests (3.3.0)
       parallel
     parser (2.7.2.0)