diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index db38639..4c3b017 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -358,7 +358,7 @@ jobs:
 
     # START Other Tests Job (SQLite 3 and mssql)
     other-tests:
-        runs-on: ubuntu-22.04
+        runs-on: ubuntu-20.04 # TODO: Change back to 'ubuntu-22.04' when https://github.com/microsoft/mssql-docker/issues/899 resolved.
         strategy:
             matrix:
                 include:
@@ -368,14 +368,14 @@ jobs:
                       db: "mcr.microsoft.com/mssql/server:2017-latest"
                       db_alias: 'MSSQL 2017'
                     - php: '7.2'
-                      db: "mcr.microsoft.com/mssql/server:2019-latest"
+                      db: "mcr.microsoft.com/mssql/server:2019-CU27-ubuntu-20.04"
                       db_alias: 'MSSQL 2019'
 
         name: PHP ${{ matrix.php }} - ${{ matrix.db_alias != '' && matrix.db_alias || matrix.db }}
 
         services:
             mssql:
-                image: ${{ matrix.db != 'mcr.microsoft.com/mssql/server:2017-latest' && matrix.db != 'mcr.microsoft.com/mssql/server:2019-latest' && 'mcr.microsoft.com/mssql/server:2017-latest' || matrix.db }}
+                image: ${{ matrix.db != 'mcr.microsoft.com/mssql/server:2017-latest' && matrix.db != 'mcr.microsoft.com/mssql/server:2019-CU27-ubuntu-20.04' && 'mcr.microsoft.com/mssql/server:2017-latest' || matrix.db }}
                 env:
                     SA_PASSWORD: "Pssw0rd_12"
                     ACCEPT_EULA: "y"
@@ -415,7 +415,7 @@ jobs:
               env:
                   MATRIX_DB: ${{ matrix.db }}
               run: |
-                  if [ $MATRIX_DB == 'mcr.microsoft.com/mssql/server:2017-latest' ] || [ $MATRIX_DB == 'mcr.microsoft.com/mssql/server:2019-latest' ]
+                  if [ $MATRIX_DB == 'mcr.microsoft.com/mssql/server:2017-latest' ] || [ $MATRIX_DB == 'mcr.microsoft.com/mssql/server:2019-CU27-ubuntu-20.04' ]
                   then
                       db='mssql'
                   else
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 226b883..4111e56 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## 1.1.12 - 2024-09-29
+
+- Updated GitHub action workflows to address compatibility and bug issues.
+- Added PHP 8.4 testing to GitHub action workflows.
+- Ensure Skeleton extension can only be installed on compatible versions of phpBB.
+- Minor code improvements and clean up.
+
 ## 1.1.11 - 2023-12-29
 
 - Updated GitHub Actions workflow to include "main" as a default repo branch to test.
@@ -137,7 +144,7 @@
 - Skeleton ACP PHP files have correct visibility declarations for methods and properties now.
 - Skeleton config service files correctly encapsulate all strings in quotes that begin with @ and % per Symfony specifications.
 - Skeleton PHP files have all their DocBlocks updated to be consistent with PSR-5 recommendations.
-- Skeleton event class methods that do not use the $event variable do not have them defined as an argument (this is done to demonstrate that the $event argument is only needed if actually used in an event listener method).
+- Skeleton event class methods that do not use the `$event` variable do not have them defined as an argument (this is done to demonstrate that the `$event` argument is only needed if actually used in an event listener method).
 - Internal DocBlocks have been updated.
 
 ## 1.0.0 - 2016-08-04
diff --git a/README.md b/README.md
index 73dc3a3..5c1796f 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # phpBB Skeleton Extension 
 
-[![Build Status](https://github.com/phpbb-extensions/phpbb-ext-skeleton/workflows/Tests/badge.svg)](https://github.com/phpbb-extensions/phpbb-ext-skeleton/actions)
+[![Build Status](https://github.com/phpbb-extensions/phpbb-ext-skeleton/actions/workflows/tests.yml/badge.svg)](https://github.com/phpbb-extensions/phpbb-ext-skeleton/actions)
 [![codecov](https://codecov.io/gh/phpbb-extensions/phpbb-ext-skeleton/branch/master/graph/badge.svg?token=lIiplpo6OQ)](https://codecov.io/gh/phpbb-extensions/phpbb-ext-skeleton)
 
 phpBB's Skeleton Extension is a tool for extension authors to help speed up and simplify the task of starting a new extension project. It generates sample starter files and directories in a skeleton package that you can use to begin building your extension.
diff --git a/composer.json b/composer.json
index 04d12c9..767ef70 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,7 @@
 	"type": "phpbb-extension",
 	"description": "The official phpBB skeleton extension generator.",
 	"homepage": "https://www.phpbb.com/customise/db/official_tool/ext_skeleton/",
-	"version": "1.1.12-dev",
+	"version": "1.1.12",
 	"license": "GPL-2.0-only",
 	"authors": [
 		{
@@ -23,7 +23,7 @@
 		"composer/installers": "~1.0"
 	},
 	"require-dev": {
-		"phing/phing": "2.4.*"
+		"phing/phing": "~2.4"
 	},
 	"extra": {
 		"display-name": "phpBB Skeleton Extension",
diff --git a/skeleton/.github/workflows/tests.yml.twig b/skeleton/.github/workflows/tests.yml.twig
index ec42c0b..9c39700 100644
--- a/skeleton/.github/workflows/tests.yml.twig
+++ b/skeleton/.github/workflows/tests.yml.twig
@@ -327,7 +327,7 @@ jobs:
 
     # START Other Tests Job (SQLite 3 and mssql)
     other-tests:
-        runs-on: ubuntu-22.04
+        runs-on: ubuntu-20.04
         strategy:
             matrix:
                 include:
@@ -337,14 +337,14 @@ jobs:
                       db: "mcr.microsoft.com/mssql/server:2017-latest"
                       db_alias: 'MSSQL 2017'
                     - php: '7.2'
-                      db: "mcr.microsoft.com/mssql/server:2019-latest"
+                      db: "mcr.microsoft.com/mssql/server:2019-CU27-ubuntu-20.04"
                       db_alias: 'MSSQL 2019'
 
         name: PHP ${{ '{{' }} matrix.php }} - ${{ '{{' }} matrix.db_alias != '' && matrix.db_alias || matrix.db }}
 
         services:
             mssql:
-                image: ${{ '{{' }} matrix.db != 'mcr.microsoft.com/mssql/server:2017-latest' && matrix.db != 'mcr.microsoft.com/mssql/server:2019-latest' && 'mcr.microsoft.com/mssql/server:2017-latest' || matrix.db }}
+                image: ${{ '{{' }} matrix.db != 'mcr.microsoft.com/mssql/server:2017-latest' && matrix.db != 'mcr.microsoft.com/mssql/server:2019-CU27-ubuntu-20.04' && 'mcr.microsoft.com/mssql/server:2017-latest' || matrix.db }}
                 env:
                     SA_PASSWORD: "Pssw0rd_12"
                     ACCEPT_EULA: "y"
@@ -384,7 +384,7 @@ jobs:
               env:
                   MATRIX_DB: ${{ '{{' }} matrix.db }}
               run: |
-                  if [ $MATRIX_DB == 'mcr.microsoft.com/mssql/server:2017-latest' ] || [ $MATRIX_DB == 'mcr.microsoft.com/mssql/server:2019-latest' ]
+                  if [ $MATRIX_DB == 'mcr.microsoft.com/mssql/server:2017-latest' ] || [ $MATRIX_DB == 'mcr.microsoft.com/mssql/server:2019-CU27-ubuntu-20.04' ]
                   then
                       db='mssql'
                   else
diff --git a/skeleton/composer.json.twig b/skeleton/composer.json.twig
index aecee69..d38326d 100644
--- a/skeleton/composer.json.twig
+++ b/skeleton/composer.json.twig
@@ -23,7 +23,7 @@
     },
 {% if COMPONENT.build %}
     "require-dev": {
-        "phing/phing": "2.4.*"
+        "phing/phing": "~2.4"
     },
 {% endif %}
     "extra": {