diff --git a/test/preflight/fixtures/example-buildpack/Gemfile.lock b/test/preflight/fixtures/example-buildpack/Gemfile.lock
index 0543b4768e..30628535fe 100644
--- a/test/preflight/fixtures/example-buildpack/Gemfile.lock
+++ b/test/preflight/fixtures/example-buildpack/Gemfile.lock
@@ -8,9 +8,7 @@ GEM
     nio4r (2.7.4)
     puma (6.5.0)
       nio4r (~> 2.0)
-    rack (3.2.1)
-    rackup (2.2.1)
-      rack (>= 3)
+    rack (3.2.3)
     rack-protection (4.1.1)
       base64 (>= 0.1.0)
       logger (>= 1.6.0)
@@ -18,6 +16,8 @@ GEM
     rack-session (2.1.1)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)
+    rackup (2.2.1)
+      rack (>= 3)
     ruby2_keywords (0.0.5)
     sinatra (4.1.1)
       logger (>= 1.6.0)