diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dc2c6ae..e163ac5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,10 +8,33 @@ on:
 
 jobs:
   test:
+    name: "test (ruby: ${{ matrix.ruby-version}}, rspec: ${{ matrix.rspec-version }})"
     strategy:
       matrix:
-        ruby-version: ["2.6", "2.7", "3.0", "3.1"]
-        rspec-version: ["2_x", "3_0", "3_1", "3_2", "3_3", "3_4", "3_5", "3_6", "3_7", "3_8", "3_9", "3_10"]
+        ruby-version: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4"]
+        rspec-version: ["3_4", "3_5", "3_6", "3_7", "3_8", "3_9", "3_10", "3_11", "3_12", "3_13"]
+        include:
+          # NOTE: ruby 3.2+ is not compatible with rspec < 3.4
+          - { ruby-version: "2.6", rspec-version: "2_x" }
+          - { ruby-version: "2.7", rspec-version: "2_x" }
+          - { ruby-version: "3.0", rspec-version: "2_x" }
+          - { ruby-version: "3.1", rspec-version: "2_x" }
+          - { ruby-version: "2.6", rspec-version: "3_0" }
+          - { ruby-version: "2.7", rspec-version: "3_0" }
+          - { ruby-version: "3.0", rspec-version: "3_0" }
+          - { ruby-version: "3.1", rspec-version: "3_0" }
+          - { ruby-version: "2.6", rspec-version: "3_1" }
+          - { ruby-version: "2.7", rspec-version: "3_1" }
+          - { ruby-version: "3.0", rspec-version: "3_1" }
+          - { ruby-version: "3.1", rspec-version: "3_1" }
+          - { ruby-version: "2.6", rspec-version: "3_2" }
+          - { ruby-version: "2.7", rspec-version: "3_2" }
+          - { ruby-version: "3.0", rspec-version: "3_2" }
+          - { ruby-version: "3.1", rspec-version: "3_2" }
+          - { ruby-version: "2.6", rspec-version: "3_3" }
+          - { ruby-version: "2.7", rspec-version: "3_3" }
+          - { ruby-version: "3.0", rspec-version: "3_3" }
+          - { ruby-version: "3.1", rspec-version: "3_3" }
 
     runs-on: ubuntu-latest
 
@@ -19,7 +42,7 @@ jobs:
       BUNDLE_GEMFILE: gemfiles/rspec_${{ matrix.rspec-version }}.gemfile
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - uses: ruby/setup-ruby@v1
       with:
@@ -30,8 +53,19 @@ jobs:
       run: bundle exec rake
 
     - name: Upload test artifacts
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       if: always()
       with:
-        name: test-artifacts
+        name: ruby-${{ matrix.ruby-version }}-rspec-${{ matrix.rspec-version }}
         path: tmp
+
+  post-test:
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Merge Artifacts
+        uses: actions/upload-artifact/merge@v4
+        with:
+          name: test-artifacts
+          separate-directories: true
+          delete-merged: true
diff --git a/.gitignore b/.gitignore
index 451a832..bb3924d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 /example/tmp/
 /pkg/
 /tmp/
+gemfiles/*.lock
diff --git a/Appraisals b/Appraisals
index 55d8ebb..4dd981d 100644
--- a/Appraisals
+++ b/Appraisals
@@ -50,3 +50,15 @@ end
 appraise "rspec-3-10" do
   gem "rspec", "~> 3.10.0"
 end
+
+appraise "rspec-3-11" do
+  gem "rspec", "~> 3.11.0"
+end
+
+appraise "rspec-3-12" do
+  gem "rspec", "~> 3.12.0"
+end
+
+appraise "rspec-3-13" do
+  gem "rspec", "~> 3.13.0"
+end
diff --git a/gemfiles/rspec_2_x.gemfile.lock b/gemfiles/rspec_2_x.gemfile.lock
deleted file mode 100644
index b5ff8e6..0000000
--- a/gemfiles/rspec_2_x.gemfile.lock
+++ /dev/null
@@ -1,45 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    rspec_junit_formatter (0.6.0)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    coderay (1.1.3)
-    diff-lcs (1.5.0)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
-      racc (~> 1.4)
-    racc (1.6.0)
-    rake (10.5.0)
-    rspec (2.14.1)
-      rspec-core (~> 2.14.0)
-      rspec-expectations (~> 2.14.0)
-      rspec-mocks (~> 2.14.0)
-    rspec-core (2.14.8)
-    rspec-expectations (2.14.5)
-      diff-lcs (>= 1.1.3, < 2.0)
-    rspec-mocks (2.14.6)
-    thor (1.1.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  bundler
-  coderay
-  nokogiri (~> 1.8, >= 1.8.2)
-  rake (~> 10.0)
-  rspec (~> 2.14, < 2.99)
-  rspec_junit_formatter!
-
-BUNDLED WITH
-   2.2.26
diff --git a/gemfiles/rspec_3_0.gemfile.lock b/gemfiles/rspec_3_0.gemfile.lock
deleted file mode 100644
index b5dd297..0000000
--- a/gemfiles/rspec_3_0.gemfile.lock
+++ /dev/null
@@ -1,49 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    rspec_junit_formatter (0.6.0)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    coderay (1.1.3)
-    diff-lcs (1.5.0)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
-      racc (~> 1.4)
-    racc (1.6.0)
-    rake (10.5.0)
-    rspec (3.0.0)
-      rspec-core (~> 3.0.0)
-      rspec-expectations (~> 3.0.0)
-      rspec-mocks (~> 3.0.0)
-    rspec-core (3.0.4)
-      rspec-support (~> 3.0.0)
-    rspec-expectations (3.0.4)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.0.0)
-    rspec-mocks (3.0.4)
-      rspec-support (~> 3.0.0)
-    rspec-support (3.0.4)
-    thor (1.1.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  bundler
-  coderay
-  nokogiri (~> 1.8, >= 1.8.2)
-  rake (~> 10.0)
-  rspec (~> 3.0.0)
-  rspec_junit_formatter!
-
-BUNDLED WITH
-   2.2.26
diff --git a/gemfiles/rspec_3_1.gemfile.lock b/gemfiles/rspec_3_1.gemfile.lock
deleted file mode 100644
index 9fb2764..0000000
--- a/gemfiles/rspec_3_1.gemfile.lock
+++ /dev/null
@@ -1,49 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    rspec_junit_formatter (0.6.0)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    coderay (1.1.3)
-    diff-lcs (1.5.0)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
-      racc (~> 1.4)
-    racc (1.6.0)
-    rake (10.5.0)
-    rspec (3.1.0)
-      rspec-core (~> 3.1.0)
-      rspec-expectations (~> 3.1.0)
-      rspec-mocks (~> 3.1.0)
-    rspec-core (3.1.7)
-      rspec-support (~> 3.1.0)
-    rspec-expectations (3.1.2)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.1.0)
-    rspec-mocks (3.1.3)
-      rspec-support (~> 3.1.0)
-    rspec-support (3.1.2)
-    thor (1.1.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  bundler
-  coderay
-  nokogiri (~> 1.8, >= 1.8.2)
-  rake (~> 10.0)
-  rspec (~> 3.1.0)
-  rspec_junit_formatter!
-
-BUNDLED WITH
-   2.2.26
diff --git a/gemfiles/rspec_3_10.gemfile.lock b/gemfiles/rspec_3_10.gemfile.lock
deleted file mode 100644
index 66ac4e0..0000000
--- a/gemfiles/rspec_3_10.gemfile.lock
+++ /dev/null
@@ -1,50 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    rspec_junit_formatter (0.6.0)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    coderay (1.1.3)
-    diff-lcs (1.5.0)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
-      racc (~> 1.4)
-    racc (1.6.0)
-    rake (13.0.6)
-    rspec (3.10.0)
-      rspec-core (~> 3.10.0)
-      rspec-expectations (~> 3.10.0)
-      rspec-mocks (~> 3.10.0)
-    rspec-core (3.10.1)
-      rspec-support (~> 3.10.0)
-    rspec-expectations (3.10.1)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-mocks (3.10.2)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-support (3.10.3)
-    thor (1.1.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  bundler
-  coderay
-  nokogiri (~> 1.8, >= 1.8.2)
-  rake
-  rspec (~> 3.10.0)
-  rspec_junit_formatter!
-
-BUNDLED WITH
-   2.2.26
diff --git a/gemfiles/rspec_3_11.gemfile b/gemfiles/rspec_3_11.gemfile
new file mode 100644
index 0000000..61f07c2
--- /dev/null
+++ b/gemfiles/rspec_3_11.gemfile
@@ -0,0 +1,7 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "rspec", "~> 3.11.0"
+
+gemspec path: "../"
diff --git a/gemfiles/rspec_3_12.gemfile b/gemfiles/rspec_3_12.gemfile
new file mode 100644
index 0000000..561a9cd
--- /dev/null
+++ b/gemfiles/rspec_3_12.gemfile
@@ -0,0 +1,7 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "rspec", "~> 3.12.0"
+
+gemspec path: "../"
diff --git a/gemfiles/rspec_3_13.gemfile b/gemfiles/rspec_3_13.gemfile
new file mode 100644
index 0000000..be287d5
--- /dev/null
+++ b/gemfiles/rspec_3_13.gemfile
@@ -0,0 +1,7 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "rspec", "~> 3.13.0"
+
+gemspec path: "../"
diff --git a/gemfiles/rspec_3_2.gemfile.lock b/gemfiles/rspec_3_2.gemfile.lock
deleted file mode 100644
index 8e71c6d..0000000
--- a/gemfiles/rspec_3_2.gemfile.lock
+++ /dev/null
@@ -1,50 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    rspec_junit_formatter (0.6.0)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    coderay (1.1.3)
-    diff-lcs (1.5.0)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
-      racc (~> 1.4)
-    racc (1.6.0)
-    rake (10.5.0)
-    rspec (3.2.0)
-      rspec-core (~> 3.2.0)
-      rspec-expectations (~> 3.2.0)
-      rspec-mocks (~> 3.2.0)
-    rspec-core (3.2.3)
-      rspec-support (~> 3.2.0)
-    rspec-expectations (3.2.1)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.2.0)
-    rspec-mocks (3.2.1)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.2.0)
-    rspec-support (3.2.2)
-    thor (1.1.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  bundler
-  coderay
-  nokogiri (~> 1.8, >= 1.8.2)
-  rake (~> 10.0)
-  rspec (~> 3.2.0)
-  rspec_junit_formatter!
-
-BUNDLED WITH
-   2.2.26
diff --git a/gemfiles/rspec_3_3.gemfile.lock b/gemfiles/rspec_3_3.gemfile.lock
deleted file mode 100644
index 0727e3e..0000000
--- a/gemfiles/rspec_3_3.gemfile.lock
+++ /dev/null
@@ -1,50 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    rspec_junit_formatter (0.6.0)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    coderay (1.1.3)
-    diff-lcs (1.5.0)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
-      racc (~> 1.4)
-    racc (1.6.0)
-    rake (10.5.0)
-    rspec (3.3.0)
-      rspec-core (~> 3.3.0)
-      rspec-expectations (~> 3.3.0)
-      rspec-mocks (~> 3.3.0)
-    rspec-core (3.3.2)
-      rspec-support (~> 3.3.0)
-    rspec-expectations (3.3.1)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.3.0)
-    rspec-mocks (3.3.2)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.3.0)
-    rspec-support (3.3.0)
-    thor (1.1.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  bundler
-  coderay
-  nokogiri (~> 1.8, >= 1.8.2)
-  rake (~> 10.0)
-  rspec (~> 3.3.0)
-  rspec_junit_formatter!
-
-BUNDLED WITH
-   2.2.26
diff --git a/gemfiles/rspec_3_4.gemfile.lock b/gemfiles/rspec_3_4.gemfile.lock
deleted file mode 100644
index f466aff..0000000
--- a/gemfiles/rspec_3_4.gemfile.lock
+++ /dev/null
@@ -1,50 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    rspec_junit_formatter (0.6.0)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    coderay (1.1.3)
-    diff-lcs (1.5.0)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
-      racc (~> 1.4)
-    racc (1.6.0)
-    rake (13.0.6)
-    rspec (3.4.0)
-      rspec-core (~> 3.4.0)
-      rspec-expectations (~> 3.4.0)
-      rspec-mocks (~> 3.4.0)
-    rspec-core (3.4.4)
-      rspec-support (~> 3.4.0)
-    rspec-expectations (3.4.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.4.0)
-    rspec-mocks (3.4.1)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.4.0)
-    rspec-support (3.4.1)
-    thor (1.1.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  bundler
-  coderay
-  nokogiri (~> 1.8, >= 1.8.2)
-  rake
-  rspec (~> 3.4.0)
-  rspec_junit_formatter!
-
-BUNDLED WITH
-   2.2.26
diff --git a/gemfiles/rspec_3_5.gemfile.lock b/gemfiles/rspec_3_5.gemfile.lock
deleted file mode 100644
index 449e725..0000000
--- a/gemfiles/rspec_3_5.gemfile.lock
+++ /dev/null
@@ -1,50 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    rspec_junit_formatter (0.6.0)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    coderay (1.1.3)
-    diff-lcs (1.5.0)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
-      racc (~> 1.4)
-    racc (1.6.0)
-    rake (13.0.6)
-    rspec (3.5.0)
-      rspec-core (~> 3.5.0)
-      rspec-expectations (~> 3.5.0)
-      rspec-mocks (~> 3.5.0)
-    rspec-core (3.5.4)
-      rspec-support (~> 3.5.0)
-    rspec-expectations (3.5.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.5.0)
-    rspec-mocks (3.5.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.5.0)
-    rspec-support (3.5.0)
-    thor (1.1.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  bundler
-  coderay
-  nokogiri (~> 1.8, >= 1.8.2)
-  rake
-  rspec (~> 3.5.0)
-  rspec_junit_formatter!
-
-BUNDLED WITH
-   2.2.26
diff --git a/gemfiles/rspec_3_6.gemfile.lock b/gemfiles/rspec_3_6.gemfile.lock
deleted file mode 100644
index 72604b1..0000000
--- a/gemfiles/rspec_3_6.gemfile.lock
+++ /dev/null
@@ -1,50 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    rspec_junit_formatter (0.6.0)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    coderay (1.1.3)
-    diff-lcs (1.5.0)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
-      racc (~> 1.4)
-    racc (1.6.0)
-    rake (13.0.6)
-    rspec (3.6.0)
-      rspec-core (~> 3.6.0)
-      rspec-expectations (~> 3.6.0)
-      rspec-mocks (~> 3.6.0)
-    rspec-core (3.6.0)
-      rspec-support (~> 3.6.0)
-    rspec-expectations (3.6.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.6.0)
-    rspec-mocks (3.6.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.6.0)
-    rspec-support (3.6.0)
-    thor (1.1.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  bundler
-  coderay
-  nokogiri (~> 1.8, >= 1.8.2)
-  rake
-  rspec (~> 3.6.0)
-  rspec_junit_formatter!
-
-BUNDLED WITH
-   2.2.26
diff --git a/gemfiles/rspec_3_7.gemfile.lock b/gemfiles/rspec_3_7.gemfile.lock
deleted file mode 100644
index fd15699..0000000
--- a/gemfiles/rspec_3_7.gemfile.lock
+++ /dev/null
@@ -1,50 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    rspec_junit_formatter (0.6.0)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    coderay (1.1.3)
-    diff-lcs (1.5.0)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
-      racc (~> 1.4)
-    racc (1.6.0)
-    rake (13.0.6)
-    rspec (3.7.0)
-      rspec-core (~> 3.7.0)
-      rspec-expectations (~> 3.7.0)
-      rspec-mocks (~> 3.7.0)
-    rspec-core (3.7.1)
-      rspec-support (~> 3.7.0)
-    rspec-expectations (3.7.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.7.0)
-    rspec-mocks (3.7.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.7.0)
-    rspec-support (3.7.1)
-    thor (1.1.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  bundler
-  coderay
-  nokogiri (~> 1.8, >= 1.8.2)
-  rake
-  rspec (~> 3.7.0)
-  rspec_junit_formatter!
-
-BUNDLED WITH
-   2.2.26
diff --git a/gemfiles/rspec_3_8.gemfile.lock b/gemfiles/rspec_3_8.gemfile.lock
deleted file mode 100644
index d3adb61..0000000
--- a/gemfiles/rspec_3_8.gemfile.lock
+++ /dev/null
@@ -1,50 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    rspec_junit_formatter (0.6.0)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    coderay (1.1.3)
-    diff-lcs (1.5.0)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
-      racc (~> 1.4)
-    racc (1.6.0)
-    rake (13.0.6)
-    rspec (3.8.0)
-      rspec-core (~> 3.8.0)
-      rspec-expectations (~> 3.8.0)
-      rspec-mocks (~> 3.8.0)
-    rspec-core (3.8.2)
-      rspec-support (~> 3.8.0)
-    rspec-expectations (3.8.6)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-mocks (3.8.2)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-support (3.8.3)
-    thor (1.1.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  bundler
-  coderay
-  nokogiri (~> 1.8, >= 1.8.2)
-  rake
-  rspec (~> 3.8.0)
-  rspec_junit_formatter!
-
-BUNDLED WITH
-   2.2.26
diff --git a/gemfiles/rspec_3_9.gemfile.lock b/gemfiles/rspec_3_9.gemfile.lock
deleted file mode 100644
index dbaf669..0000000
--- a/gemfiles/rspec_3_9.gemfile.lock
+++ /dev/null
@@ -1,50 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    rspec_junit_formatter (0.6.0)
-      rspec-core (>= 2, < 4, != 2.12.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    appraisal (2.4.1)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    coderay (1.1.3)
-    diff-lcs (1.5.0)
-    mini_portile2 (2.6.1)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
-      racc (~> 1.4)
-    racc (1.6.0)
-    rake (13.0.6)
-    rspec (3.9.0)
-      rspec-core (~> 3.9.0)
-      rspec-expectations (~> 3.9.0)
-      rspec-mocks (~> 3.9.0)
-    rspec-core (3.9.3)
-      rspec-support (~> 3.9.3)
-    rspec-expectations (3.9.4)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.9.0)
-    rspec-mocks (3.9.1)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.9.0)
-    rspec-support (3.9.4)
-    thor (1.1.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  bundler
-  coderay
-  nokogiri (~> 1.8, >= 1.8.2)
-  rake
-  rspec (~> 3.9.0)
-  rspec_junit_formatter!
-
-BUNDLED WITH
-   2.2.26