diff --git a/Gemfile.lock b/Gemfile.lock
index 2f19f3a..f9a0683 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -145,7 +145,7 @@ GEM
     powerpack (0.1.2)
     proxifier (1.0.3)
     public_suffix (3.0.3)
-    rack (2.0.6)
+    rack (2.2.3)
     rainbow (3.0.0)
     rake (12.3.3)
     retryable (2.0.4)