diff --git a/src-crg/Gemfile.lock b/src-crg/Gemfile.lock
index e06097640e2..8c6b1d07dd0 100644
--- a/src-crg/Gemfile.lock
+++ b/src-crg/Gemfile.lock
@@ -93,7 +93,7 @@ GEM
       activesupport (>= 3.1)
     parallel (1.10.0)
     public_suffix (2.0.5)
-    rack (2.0.9)
+    rack (2.2.3)
     rb-fsevent (0.9.8)
     rb-inotify (0.9.8)
       ffi (>= 0.5.0)