diff --git a/Gemfile.lock b/Gemfile.lock
deleted file mode 100644
index 605f5b1..0000000
--- a/Gemfile.lock
+++ /dev/null
@@ -1,122 +0,0 @@
-PATH
-  remote: .
-  specs:
-    oas_parser (0.25.4)
-      activesupport (>= 4.0.0)
-      addressable (~> 2.3)
-      builder (~> 3.2.3)
-      deep_merge (~> 1.2.1)
-      hash-deep-merge
-      mustermann-contrib (~> 1.1.1)
-      nokogiri
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    activesupport (6.1.3.1)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 1.6, < 2)
-      minitest (>= 5.1)
-      tzinfo (~> 2.0)
-      zeitwerk (~> 2.3)
-    addressable (2.8.0)
-      public_suffix (>= 2.0.2, < 5.0)
-    builder (3.2.4)
-    coderay (1.1.2)
-    concurrent-ruby (1.1.8)
-    deep_merge (1.2.1)
-    diff-lcs (1.3)
-    docile (1.1.5)
-    ffi (1.9.25)
-    formatador (0.2.5)
-    guard (2.15.0)
-      formatador (>= 0.2.4)
-      listen (>= 2.7, < 4.0)
-      lumberjack (>= 1.0.12, < 2.0)
-      nenv (~> 0.1)
-      notiffany (~> 0.0)
-      pry (>= 0.9.12)
-      shellany (~> 0.0)
-      thor (>= 0.18.1)
-    guard-compat (1.2.1)
-    guard-rspec (4.7.3)
-      guard (~> 2.1)
-      guard-compat (~> 1.1)
-      rspec (>= 2.99.0, < 4.0)
-    hansi (0.2.0)
-    hash-deep-merge (0.1.1)
-    i18n (1.8.10)
-      concurrent-ruby (~> 1.0)
-    json (2.3.1)
-    listen (3.1.5)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
-      ruby_dep (~> 1.2)
-    lumberjack (1.0.13)
-    method_source (0.9.2)
-    mini_portile2 (2.5.1)
-    minitest (5.14.4)
-    mustermann (1.1.1)
-      ruby2_keywords (~> 0.0.1)
-    mustermann-contrib (1.1.1)
-      hansi (~> 0.2.0)
-      mustermann (= 1.1.1)
-    nenv (0.3.0)
-    nokogiri (1.11.4)
-      mini_portile2 (~> 2.5.0)
-      racc (~> 1.4)
-    notiffany (0.1.1)
-      nenv (~> 0.1)
-      shellany (~> 0.0)
-    pry (0.11.3)
-      coderay (~> 1.1.0)
-      method_source (~> 0.9.0)
-    public_suffix (4.0.6)
-    racc (1.5.2)
-    rake (13.0.1)
-    rb-fsevent (0.10.3)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
-    rspec (3.8.0)
-      rspec-core (~> 3.8.0)
-      rspec-expectations (~> 3.8.0)
-      rspec-mocks (~> 3.8.0)
-    rspec-collection_matchers (1.1.3)
-      rspec-expectations (>= 2.99.0.beta1)
-    rspec-core (3.8.0)
-      rspec-support (~> 3.8.0)
-    rspec-expectations (3.8.2)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-mocks (3.8.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-support (3.8.0)
-    ruby2_keywords (0.0.4)
-    ruby_dep (1.5.0)
-    shellany (0.0.1)
-    simplecov (0.15.1)
-      docile (~> 1.1.0)
-      json (>= 1.8, < 3)
-      simplecov-html (~> 0.10.0)
-    simplecov-html (0.10.2)
-    thor (0.20.3)
-    tzinfo (2.0.4)
-      concurrent-ruby (~> 1.0)
-    zeitwerk (2.4.2)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  bundler (~> 2.1)
-  guard-rspec (~> 4.7.3)
-  oas_parser!
-  pry (~> 0.11.3)
-  rake (~> 13.0)
-  rspec (~> 3.0)
-  rspec-collection_matchers (~> 1.1.3)
-  simplecov (~> 0.15.1)
-
-BUNDLED WITH
-   2.1.4
diff --git a/lib/oas_parser/version.rb b/lib/oas_parser/version.rb
index 5bfecd6..66cb278 100644
--- a/lib/oas_parser/version.rb
+++ b/lib/oas_parser/version.rb
@@ -1,3 +1,3 @@
 module OasParser
-  VERSION = '0.25.4'.freeze
+  VERSION = '0.25.4-paywith-1'.freeze
 end
diff --git a/oas_parser.gemspec b/oas_parser.gemspec
index 505d140..69aa7c1 100644
--- a/oas_parser.gemspec
+++ b/oas_parser.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "deep_merge", "~> 1.2.1"
   spec.add_dependency "activesupport", ">= 4.0.0"
   spec.add_dependency "builder", "~> 3.2.3"
-  spec.add_dependency "mustermann-contrib", "~> 1.1.1"
+  spec.add_dependency "mustermann-contrib", "~> 2"
   spec.add_dependency "nokogiri"
   spec.add_dependency "hash-deep-merge"