diff --git a/test/acceptance/workspaces/mono-repo-project-manifests-only/Gemfile b/test/acceptance/workspaces/mono-repo-project-manifests-only/Gemfile
index eaaf55a49f..69fa66e7f0 100644
--- a/test/acceptance/workspaces/mono-repo-project-manifests-only/Gemfile
+++ b/test/acceptance/workspaces/mono-repo-project-manifests-only/Gemfile
@@ -1,6 +1,6 @@
 source :rubygems
 
-gem "sinatra"
+gem "sinatra", ">= 4.1.0"
 gem "haml"
 gem "httparty"
 gem "actionpack"