diff --git a/src/config/app.spec.ts b/src/config/app.spec.ts
index 80b4c71..1ff13b5 100644
--- a/src/config/app.spec.ts
+++ b/src/config/app.spec.ts
@@ -18,9 +18,9 @@ describe('config/app', () => {
             ${'8.1'}                       | ${[ '8.1' ]}
             ${'8.1.0'}                     | ${[ '8.1' ]}
             ${'8.1.12'}                    | ${[ '8.1' ]}
-            ${'^8.1'}                      | ${[ '8.1', '8.2', '8.3' ]}
-            ${'^8.1.0'}                    | ${[ '8.1', '8.2', '8.3' ]}
-            ${'^8.1.12'}                   | ${[ '8.1', '8.2', '8.3' ]}
+            ${'^8.1'}                      | ${[ '8.1', '8.2', '8.3', '8.4' ]}
+            ${'^8.1.0'}                    | ${[ '8.1', '8.2', '8.3', '8.4' ]}
+            ${'^8.1.12'}                   | ${[ '8.1', '8.2', '8.3', '8.4' ]}
             ${'~8.1'}                      | ${[ '8.1' ]}
             ${'~8.1.0'}                    | ${[ '8.1' ]}
             ${'~8.1.12'}                   | ${[ '8.1' ]}
@@ -48,7 +48,7 @@ describe('config/app', () => {
                 codeChecks                    : true,
                 docLinting                    : true,
                 versions                      : [ '8.1' ],
-                stablePhpVersion              : '8.0',
+                stablePhpVersion              : '8.1',
                 minimumPhpVersion             : '8.1',
                 latestPhpVersion              : '8.1',
                 lockedDependenciesExists      : false,
diff --git a/src/config/php.ts b/src/config/php.ts
index 04882e4..4a77577 100644
--- a/src/config/php.ts
+++ b/src/config/php.ts
@@ -8,8 +8,9 @@ export const PHP_80 = '8.0';
 export const PHP_81 = '8.1';
 export const PHP_82 = '8.2';
 export const PHP_83 = '8.3';
+export const PHP_84 = '8.4';
 
-export const CURRENT_STABLE = PHP_80;
+export const CURRENT_STABLE = PHP_81;
 export const CONTAINER_DEFAULT_PHP_VERSION = '@default';
 
 /**
@@ -27,6 +28,7 @@ export const INSTALLABLE_VERSIONS = [
     PHP_81,
     PHP_82,
     PHP_83,
+    PHP_84,
     CONTAINER_DEFAULT_PHP_VERSION,
 ] as const;