diff --git a/.github/workflows/5_1_3.yml b/.github/workflows/5_1_4.yml
similarity index 94%
rename from .github/workflows/5_1_3.yml
rename to .github/workflows/5_1_4.yml
index 44f5426..ec024ec 100644
--- a/.github/workflows/5_1_3.yml
+++ b/.github/workflows/5_1_4.yml
@@ -1,8 +1,8 @@
-name: Tests 5.1.3
+name: Tests 5.1.4
 
 env:
   PLUGIN_NAME: redmine_organizations
-  REDMINE_VERSION: 5.1.3
+  REDMINE_VERSION: 5.1.4
 
 on:
   push:
@@ -88,8 +88,6 @@ jobs:
       - name: Prepare Redmine source
         working-directory: redmine
         run: |
-          # TODO Remove the following line when https://www.redmine.org/issues/40551 is fixed
-          sed -i -e 's/.*mocha.*/  gem "mocha", "2.1.0"/' Gemfile # Fix core tests not compatible with Mocha 2.2.0
           rm -f test/integration/routing/plugins_test.rb # Fix routing tests # TODO Remove this line when https://www.redmine.org/issues/38707 is fixed
           sed -i '/rubocop/d' Gemfile
           rm -f .rubocop*
diff --git a/.github/workflows/4_2_11.yml b/.github/workflows/6_0_1.yml
similarity index 93%
rename from .github/workflows/4_2_11.yml
rename to .github/workflows/6_0_1.yml
index bb043f0..3a52473 100644
--- a/.github/workflows/4_2_11.yml
+++ b/.github/workflows/6_0_1.yml
@@ -1,8 +1,8 @@
-name: Tests 4.2.11
+name: Tests 6.0.1
 
 env:
   PLUGIN_NAME: redmine_organizations
-  REDMINE_VERSION: 4.2.11
+  REDMINE_VERSION: 6.0.1
 
 on:
   push:
@@ -15,7 +15,7 @@ jobs:
 
     strategy:
       matrix:
-        ruby: ['2.7']
+        ruby: ['3.3']
         db: ['postgres']
       fail-fast: false
 
@@ -88,12 +88,10 @@ jobs:
       - name: Prepare Redmine source
         working-directory: redmine
         run: |
-          # TODO Remove the following line when https://www.redmine.org/issues/40551 is fixed
-          sed -i -e 's/.*mocha.*/  gem "mocha", "2.1.0"/' Gemfile # Fix core tests not compatible with Mocha 2.2.0
+          rm -f test/integration/routing/plugins_test.rb # Fix routing tests # TODO Remove this line when https://www.redmine.org/issues/38707 is fixed
           sed -i '/rubocop/d' Gemfile
           rm -f .rubocop*
           cp plugins/redmine_base_rspec/spec/support/database-${{ matrix.db }}.yml config/database.yml
-          echo 'gem "builder", "~> 3.2.4"' >> Gemfile
 
       - name: Install Ruby dependencies
         working-directory: redmine
diff --git a/README.md b/README.md
index a941970..ae674d6 100644
--- a/README.md
+++ b/README.md
@@ -11,11 +11,11 @@ Tests status
 
 |Plugin branch| Redmine Version | Test Status       |
 |-------------|-----------------|-------------------|
-|master       | 4.2.11          | [![4.2.11][1]][5] |
-|master       | 5.1.3           | [![5.1.3][2]][5]  |
+|master       | 6.0.1           | [![6.0.1][1]][5]  |
+|master       | 5.1.4           | [![5.1.4][2]][5]  |
 |master       | master          | [![master][4]][5] |
 
-[1]: https://github.com/jbbarth/redmine_organizations/actions/workflows/4_2_11.yml/badge.svg
-[2]: https://github.com/jbbarth/redmine_organizations/actions/workflows/5_1_3.yml/badge.svg
+[1]: https://github.com/jbbarth/redmine_organizations/actions/workflows/6_0_1.yml/badge.svg
+[2]: https://github.com/jbbarth/redmine_organizations/actions/workflows/5_1_4.yml/badge.svg
 [4]: https://github.com/jbbarth/redmine_organizations/actions/workflows/master.yml/badge.svg
 [5]: https://github.com/jbbarth/redmine_organizations/actions