diff --git a/activity-reporter/Gemfile.lock b/activity-reporter/Gemfile.lock
index 43adcfa..e0103df 100644
--- a/activity-reporter/Gemfile.lock
+++ b/activity-reporter/Gemfile.lock
@@ -28,7 +28,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    rack (2.1.1)
+    rack (2.2.3)
     rainbow (3.0.0)
     rb-readline (0.5.5)
     redis (4.1.0)