sinatra_30.gemfile in instana-1.213.2

- old
+ new

@@ -6,8 +6,8 @@
 gem "webmock"
 gem "puma"
 gem "rubocop", "~> 1.9"
 gem "rack-test"
 gem "simplecov", "~> 0.21.2"
-gem "sinatra", ">= 3.0.6"
+gem "sinatra", ">= 3.0.6", "< 4.0"
 
 gemspec path: "../"