diff --git a/Gemfile.lock b/Gemfile.lock
index c7cdb98..343b9d5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -24,7 +24,7 @@ GEM
       minitest (>= 5.0)
       ruby-progressbar
     parallel (1.24.0)
-    parser (3.3.4.2)
+    parser (3.3.5.0)
       ast (~> 2.4.1)
       racc
     racc (1.8.1)