diff --git a/.github/workflows/4_2_11.yml b/.github/workflows/4_2_11.yml
index 96977e3..2dd6e0d 100644
--- a/.github/workflows/4_2_11.yml
+++ b/.github/workflows/4_2_11.yml
@@ -47,7 +47,7 @@ jobs:
 
       - name: Install package dependencies
         run: >
-          sudo apt-get install --yes --quiet
+          sudo apt-get update && sudo apt-get install --yes --quiet
           build-essential
           cmake
           libicu-dev
@@ -88,6 +88,8 @@ 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
           sed -i '/rubocop/d' Gemfile
           rm -f .rubocop*
           cp plugins/redmine_base_rspec/spec/support/database-${{ matrix.db }}.yml config/database.yml
diff --git a/.github/workflows/5_1_1.yml b/.github/workflows/5_1_2.yml
similarity index 93%
rename from .github/workflows/5_1_1.yml
rename to .github/workflows/5_1_2.yml
index d0a61b1..31a20ba 100644
--- a/.github/workflows/5_1_1.yml
+++ b/.github/workflows/5_1_2.yml
@@ -1,8 +1,8 @@
-name: Tests 5.1.1
+name: Tests 5.1.2
 
 env:
   PLUGIN_NAME: redmine_organizations
-  REDMINE_VERSION: 5.1.1
+  REDMINE_VERSION: 5.1.2
 
 on:
   push:
@@ -47,7 +47,7 @@ jobs:
 
       - name: Install package dependencies
         run: >
-          sudo apt-get install --yes --quiet
+          sudo apt-get update && sudo apt-get install --yes --quiet
           build-essential
           cmake
           libicu-dev
@@ -88,6 +88,8 @@ 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/master.yml b/.github/workflows/master.yml
index ded4ec5..6a30274 100644
--- a/.github/workflows/master.yml
+++ b/.github/workflows/master.yml
@@ -47,7 +47,7 @@ jobs:
 
       - name: Install package dependencies
         run: >
-          sudo apt-get install --yes --quiet
+          sudo apt-get update && sudo apt-get install --yes --quiet
           build-essential
           cmake
           libicu-dev
diff --git a/README.md b/README.md
index 8c7e4e7..3f96e23 100644
--- a/README.md
+++ b/README.md
@@ -12,10 +12,10 @@ Tests status
 |Plugin branch| Redmine Version | Test Status       |
 |-------------|-----------------|-------------------|
 |master       | 4.2.11          | [![4.2.11][1]][5] |
-|master       | 5.1.1           | [![5.1.1][2]][5]  |
+|master       | 5.1.2           | [![5.1.2][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_1.yml/badge.svg
+[2]: https://github.com/jbbarth/redmine_organizations/actions/workflows/5_1_2.yml/badge.svg
 [4]: https://github.com/jbbarth/redmine_organizations/actions/workflows/master.yml/badge.svg
 [5]: https://github.com/jbbarth/redmine_organizations/actions
diff --git a/app/controllers/organizations/memberships_controller.rb b/app/controllers/organizations/memberships_controller.rb
index 550ca32..21d6d82 100644
--- a/app/controllers/organizations/memberships_controller.rb
+++ b/app/controllers/organizations/memberships_controller.rb
@@ -7,7 +7,7 @@ class Organizations::MembershipsController < ApplicationController
   before_action :find_project_by_project_id, :is_allowed_to_manage_members?
   before_action :find_organization, except: [:new, :create_non_members_roles, :update_group_non_member_roles]
   before_action :members_to_delete_from_organization_in_project, only: [:destroy_organization]
-  after_action :journalized_detroying_organization, only: [:destroy_organization] if Redmine::Plugin.installed?(:redmine_admin_activity)
+  after_action :journalized_destroying_organization, only: [:destroy_organization] if Redmine::Plugin.installed?(:redmine_admin_activity)
 
   def new
     @member = Member.new
@@ -216,7 +216,7 @@ def members_to_delete_from_organization_in_project
     @members_to_delete = @organization.members_by_organization_in_project(@project).select { |member| member if member.deletable? }
   end
 
-  def journalized_detroying_organization
+  def journalized_destroying_organization
     @members_to_delete.each do |member|
       previous_role_ids = member.role_ids
       previous_function_ids = member.function_ids if limited_visibility_plugin_installed?