diff --git a/Gemfile.lock b/Gemfile.lock
index b08659f70..4ee7f5537 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -91,7 +91,7 @@ GEM
       io-console (~> 0.5)
     securerandom (0.4.1)
     stackprof (0.2.27)
-    stringio (3.1.4)
+    stringio (3.1.5)
     strscan (3.1.2)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)