diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 63b2103..270f0f5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -22,6 +22,8 @@ jobs:
           - "8.0"
           - "8.1"
           - "8.2"
+          - "8.3"
+          - "8.4"
 
     steps:
       - name: "Checkout"
@@ -98,6 +100,8 @@ jobs:
           - "8.0"
           - "8.1"
           - "8.2"
+          - "8.3"
+          - "8.4"
         dependencies:
           - "lowest"
           - "highest"
@@ -141,6 +145,8 @@ jobs:
           - "8.0"
           - "8.1"
           - "8.2"
+          - "8.3"
+          - "8.4"
         dependencies:
           - "lowest"
           - "highest"
diff --git a/composer.json b/composer.json
index dc0f3db..5b1ec50 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,7 @@
 	],
 	"require": {
 		"php": "^7.2 || ^8.0",
-		"phpstan/phpstan": "^1.11"
+		"phpstan/phpstan": "^1.12"
 	},
 	"conflict": {
 		"phpunit/phpunit": "<7.0"