diff --git a/.github/workflows/codestyle.yml b/.github/workflows/codestyle.yml
index a4c8a49973..0dbddf8f72 100644
--- a/.github/workflows/codestyle.yml
+++ b/.github/workflows/codestyle.yml
@@ -46,7 +46,7 @@ jobs:
       image: pipelinecomponents/php-codesniffer:latest
     strategy:
       matrix:
-        PHPVERSION: ["8.1", "8.2", "8.3"]
+        PHPVERSION: ["8.1", "8.2", "8.3", "8.4"]
     steps:
       - run: apk add git
       - uses: actions/checkout@v4
diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
index 3a2e5ac66c..3d7b4fd952 100644
--- a/.github/workflows/phpstan.yml
+++ b/.github/workflows/phpstan.yml
@@ -13,7 +13,9 @@ jobs:
       - uses: actions/checkout@v4
       - name: Setup composer dependencies
         run: .github/jobs/composer_setup.sh
-      - uses: php-actions/phpstan@v3
+      - name: Show the phpstan version
+        run: webapp/vendor/phpstan/phpstan/phpstan --version
+      - uses: php-actions/phpstan@v3.0.2
         with:
           configuration: webapp/phpstan.dist.neon
           path: webapp/src webapp/tests
diff --git a/gitlab/ci/template.yml b/gitlab/ci/template.yml
index 86521a2f22..e810df854c 100644
--- a/gitlab/ci/template.yml
+++ b/gitlab/ci/template.yml
@@ -50,7 +50,7 @@
     - /bin/true
   parallel:
     matrix:
-      - PHPVERSION: ["8.1","8.2","8.3"]
+      - PHPVERSION: ["8.1","8.2","8.3", "8.4"]
         TEST: ["E2E","Unit"]
         CRAWL_SHADOW_MODE: ["0","1"]
 
diff --git a/gitlab/ci/unit.yml b/gitlab/ci/unit.yml
index d9a91557b1..5bf7aab8c7 100644
--- a/gitlab/ci/unit.yml
+++ b/gitlab/ci/unit.yml
@@ -29,21 +29,12 @@
         - unit-tests.xml
 
 run unit tests:
-  only:
-    - main
-    - /^[0-9].[0-9]$/
   extends: [.mariadb_job,.phpsupported_job,.unit_job]
 
 run unit tests (PR):
-  except:
-    - main
-    - /^[0-9].[0-9]$/
   extends: [.mariadb_job,.phpsupported_job_pr,.unit_job]
 
 run unit tests (MySQL):
-  only:
-    - main
-    - /^[0-9].[0-9]$/
   extends: [.mysql_job,.unit_job]
   parallel:
     matrix:
diff --git a/gitlab/unit-tests.sh b/gitlab/unit-tests.sh
index 63ae58121e..b412a060cb 100755
--- a/gitlab/unit-tests.sh
+++ b/gitlab/unit-tests.sh
@@ -36,11 +36,12 @@ php $phpcov webapp/bin/phpunit -c webapp/phpunit.xml.dist webapp/tests/$unittest
 UNITSUCCESS=$?
 set -e
 CNT=0
+THRESHOLD=32
 if [ $CODECOVERAGE -eq 1 ]; then
     CNT=$(sed -n '/Generating code coverage report/,$p' "$GITLABARTIFACTS"/phpunit.out | grep -v DoctrineTestBundle | grep -cv ^$)
     FILE=deprecation.txt
     sed -n '/Generating code coverage report/,$p' "$GITLABARTIFACTS"/phpunit.out > ${CI_PROJECT_DIR}/$FILE
-    if [ $CNT -le 32 ]; then
+    if [ $CNT -le $THRESHOLD ]; then
         STATE=success
     else
         STATE=failure
@@ -52,7 +53,7 @@ if [ $CODECOVERAGE -eq 1 ]; then
       -X POST \
       -H "Authorization: token $GH_BOT_TOKEN_OBSCURED" \
       -H "Accept: application/vnd.github.v3+json" \
-      -d "{\"state\": \"$STATE\", \"target_url\": \"${CI_JOB_URL/$ORIGINAL/$REPLACETO}/artifacts/$FILE\", \"description\":\"Symfony deprecations\", \"context\": \"Symfony deprecation\"}"
+      -d "{\"state\": \"$STATE\", \"target_url\": \"${CI_JOB_URL/$ORIGINAL/$REPLACETO}/artifacts/$FILE\", \"description\":\"Symfony deprecations ($version)\", \"context\": \"Symfony deprecation ($version)\"}"
 fi
 if [ $UNITSUCCESS -eq 0 ]; then
     STATE=success
@@ -66,7 +67,7 @@ curl https://api.github.com/repos/domjudge/domjudge/statuses/$CI_COMMIT_SHA \
     -H "Authorization: token $GH_BOT_TOKEN_OBSCURED" \
     -H "Accept: application/vnd.github.v3+json" \
     -d "{\"state\": \"$STATE\", \"target_url\": \"${CI_PIPELINE_URL}/test_report\", \"description\":\"Unit tests\", \"context\": \"unit_tests ($version)\"}"
-if [ $UNITSUCCESS -ne 0 ]; then
+if [ $UNITSUCCESS -ne 0 ] || [ $CNT -gt $THRESHOLD ]; then
     exit 1
 fi
 
diff --git a/webapp/src/Controller/Jury/JuryMiscController.php b/webapp/src/Controller/Jury/JuryMiscController.php
index 13fbd55696..c2f6018de9 100644
--- a/webapp/src/Controller/Jury/JuryMiscController.php
+++ b/webapp/src/Controller/Jury/JuryMiscController.php
@@ -50,7 +50,7 @@ public function __construct(
     public function indexAction(ConfigurationService $config): Response
     {
         if ($this->isGranted('ROLE_ADMIN')) {
-            $innodbSnapshotIsolation = $this->em->getConnection()->query('SHOW VARIABLES LIKE "innodb_snapshot_isolation"')->fetchAssociative();
+            $innodbSnapshotIsolation = $this->em->getConnection()->executeQuery('SHOW VARIABLES LIKE "innodb_snapshot_isolation"')->fetchAssociative();
             if ($innodbSnapshotIsolation && $innodbSnapshotIsolation['Value'] === 'ON') {
                 $this->addFlash('danger', 'InnoDB snapshot isolation is enabled. Set --innodb_snapshot_isolation=OFF in your MariaDB configuration. See https://github.com/DOMjudge/domjudge/issues/2848 for more information.');
             }