diff --git a/samples/all-tools-target/ruby-app/Gemfile b/samples/all-tools-target/ruby-app/Gemfile
index ff5fc59..b2657e5 100644
--- a/samples/all-tools-target/ruby-app/Gemfile
+++ b/samples/all-tools-target/ruby-app/Gemfile
@@ -1,3 +1,3 @@
 source "https://rubygems.org"
 
-gem "rack", "2.0.6"
+gem "rack", "2.2.23"
diff --git a/samples/all-tools-target/ruby-app/Gemfile.lock b/samples/all-tools-target/ruby-app/Gemfile.lock
index 5c422bd..46499b3 100644
--- a/samples/all-tools-target/ruby-app/Gemfile.lock
+++ b/samples/all-tools-target/ruby-app/Gemfile.lock
@@ -1,13 +1,13 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    rack (2.0.6)
+    rack (2.2.23)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  rack (= 2.0.6)
+  rack (= 2.2.23)
 
 BUNDLED WITH
    2.4.22