diff --git a/Gemfile.lock b/Gemfile.lock
index 72fca6be1b5..009973db242 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -294,7 +294,7 @@ GEM
       openssl (~> 2.0)
     optimist (3.0.1)
     parallel (1.22.1)
-    parallel_tests (3.7.3)
+    parallel_tests (3.8.1)
       parallel
     parser (3.1.1.0)
       ast (~> 2.4.1)