diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
deleted file mode 100644
index b027823..0000000
--- a/.github/workflows/ci.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-name: CI
-
-on:
-    push:
-        branches: [master]
-    pull_request:
-        branches: [master]
-
-permissions:
-    contents: read
-
-jobs:
-    lint:
-        name: PHP ${{ matrix.php }} lint
-        runs-on: ubuntu-latest
-        strategy:
-            matrix:
-                php: ['7.1', '7.4', '8.0', '8.1']
-        steps:
-            - uses: actions/checkout@v4
-
-            - name: Set up PHP ${{ matrix.php }}
-              uses: shivammathur/setup-php@v2
-              with:
-                  php-version: ${{ matrix.php }}
-                  coverage: none
-                  tools: composer:v2
-
-            - name: PHP syntax check
-              run: find . -name '*.php' -not -path './.git/*' -print0 | xargs -0 -n1 php -l
-
-            - name: Validate composer.json
-              run: composer validate --no-check-all --no-check-publish
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
new file mode 100644
index 0000000..ef48cd3
--- /dev/null
+++ b/.github/workflows/lint.yml
@@ -0,0 +1,38 @@
+name: Lint
+
+# PHP syntax check on the lowest PHP version this extension supports and the
+# newest one phpBB 3.3 supports. tests.yml covers PHP 8.2 with phpBB's own
+# checks (code sniffer, EPV).
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    name: PHP ${{ matrix.php }} lint
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php: ['7.4', '8.4']
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up PHP ${{ matrix.php }}
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          coverage: none
+          tools: composer:v2
+
+      - name: PHP syntax check
+        run: find . -name '*.php' -not -path './.git/*' -not -path './vendor/*' -print0 | xargs -0 -n1 php -l
+
+      - name: Validate composer.json
+        run: composer validate --no-check-all --no-check-publish
diff --git a/README.md b/README.md
index 63278c8..eb313e1 100644
--- a/README.md
+++ b/README.md
@@ -13,8 +13,8 @@ See [docs/screenshots](docs/screenshots) for both themes rendered.
 
 ## Requirements
 
-* PHP 7.1 or later
-* phpBB 3.1.0-RC3 up to (but not including) 3.3
+* PHP 7.4 or later
+* phpBB 3.3.19 or later (3.3.x)
 
 ## Installation
 
diff --git a/composer.json b/composer.json
index 10698e7..f657b78 100644
--- a/composer.json
+++ b/composer.json
@@ -32,13 +32,13 @@
 		}
 	],
 	"require": {
-		"php": ">=7.1",
+		"php": ">=7.4",
 		"composer/installers": "^1.0"
 	},
 	"extra": {
 		"display-name": "Holiday Flare",
 		"soft-require": {
-			"phpbb/phpbb": ">=3.1.0-RC3,<3.3.*@dev"
+			"phpbb/phpbb": ">=3.3.19,<4.0.0@dev"
 		},
 		"version-check": {
 			"host": "www.phpbb.com",