diff --git a/steep/Gemfile.lock b/steep/Gemfile.lock
index 9f3d7ab01..ec771e8cd 100644
--- a/steep/Gemfile.lock
+++ b/steep/Gemfile.lock
@@ -33,7 +33,7 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.10)
     logger (1.6.5)
     minitest (5.25.4)
-    parser (3.3.6.0)
+    parser (3.3.7.0)
       ast (~> 2.4.1)
       racc
     racc (1.8.1)