diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 6b00762..07301b3 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -35,7 +35,7 @@ jobs:
       matrix:
         include:
           - operating-system: "ubuntu-latest"
-            php-version: "8.1"
+            php-version: "8.3"
 
     steps:
       - name: "Checkout"
@@ -68,7 +68,7 @@ jobs:
       matrix:
         include:
           - operating-system: "ubuntu-latest"
-            php-version: "8.1"
+            php-version: "8.3"
 
     steps:
       - name: "Checkout"
@@ -100,18 +100,26 @@ jobs:
 
     strategy:
       matrix:
-        operating-system: [ "ubuntu-latest", "macos-latest", "windows-latest" ]
-        php-version: [ "8.1" ]
+        operating-system: [ "ubuntu-latest" ]
+        php-version: [ "8.3" ]
         composer-flags: [ "" ]
         experimental: [ false ]
         include:
           - operating-system: "ubuntu-latest"
-            php-version: "8.1"
+            php-version: "8.3"
             composer-flags: "--prefer-lowest --prefer-stable"
             experimental: false
           - operating-system: "ubuntu-latest"
-            php-version: "8.2"
+            php-version: "8.4"
             composer-flags: "--ignore-platform-req=php+"
+            experimental: true
+          - operating-system: "macos-latest"
+            php-version: "8.3"
+            composer-flags: ""
+            experimental: false
+          - operating-system: "windows-latest"
+            php-version: "8.3"
+            composer-flags: ""
             experimental: false
 
     steps:
@@ -162,7 +170,7 @@ jobs:
       matrix:
         include:
           - operating-system: "ubuntu-latest"
-            php-version: "8.1"
+            php-version: "8.3"
 
     steps:
       - name: "Coveralls"
@@ -182,7 +190,7 @@ jobs:
       matrix:
         include:
           - operating-system: "ubuntu-latest"
-            php-version: "8.1"
+            php-version: "8.3"
 
     steps:
       - name: "Checkout"
diff --git a/composer.json b/composer.json
index a80d5f2..9f4d68a 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,7 @@
 		}
 	],
 	"require": {
-		"php": ">=8.1.0 <8.3.0",
+		"php": "8.3 - 8.3",
 		"brick/date-time": "^0.4.1",
 		"brick/math": "^0.11.0",
 		"brick/money": "^0.8.0",
@@ -57,7 +57,7 @@
 		"orisai/nette-clock": "^1.0.0",
 		"orisai/nette-console": "^1.2.0",
 		"orisai/nette-data-sources": "^1.0.0",
-		"orisai/nette-di": "dev-f/installer as 1.3.1",
+		"orisai/nette-di": "dev-f/installer as 1.3.3",
 		"orisai/nette-http": "^1.1.0",
 		"orisai/nette-monolog": "^1.2.3",
 		"orisai/nette-scheduler": "^1.2.0",
diff --git a/tools/phpcs.xml b/tools/phpcs.xml
index 64421c7..e85d5a1 100644
--- a/tools/phpcs.xml
+++ b/tools/phpcs.xml
@@ -9,7 +9,7 @@
 	<arg name="cache" value="./../var/tools/PHP_CodeSniffer/cache.dat"/>
 
 	<!-- Import coding-standard -->
-	<rule ref="./../vendor/orisai/coding-standard/src/ruleset-8.1.xml"/>
+	<rule ref="./../vendor/orisai/coding-standard/src/ruleset-8.3.xml"/>
 
 	<!-- Configure PSR-4 rule -->
 	<rule ref="SlevomatCodingStandard.Files.TypeNameMatchesFileName">