diff --git a/gemstash.gemspec b/gemstash.gemspec
index 789e3a19..de1d6212 100644
--- a/gemstash.gemspec
+++ b/gemstash.gemspec
@@ -40,7 +40,7 @@ you push your own private gems as well."
   spec.add_runtime_dependency "puma", "~> 6.1"
   spec.add_runtime_dependency "sequel", "~> 5.0"
   spec.add_runtime_dependency "server_health_check-rack", "~> 0.1"
-  spec.add_runtime_dependency "sinatra", ">= 1.4", "< 4.0"
+  spec.add_runtime_dependency "sinatra", ">= 1.4", "< 5.0"
   spec.add_runtime_dependency "terminal-table", "~> 3.0"
   spec.add_runtime_dependency "thor", "~> 1.0"