diff --git a/.github/workflows/core11.yml b/.github/workflows/core13.yml
similarity index 51%
rename from .github/workflows/core11.yml
rename to .github/workflows/core13.yml
index 6c33e5e8ef..d32131d25c 100644
--- a/.github/workflows/core11.yml
+++ b/.github/workflows/core13.yml
@@ -1,55 +1,49 @@
-name: core 11
+name: core 12
 
 on: [ push, pull_request ]
 
 jobs:
   tests:
-    name: v11
+    name: v12
     runs-on: ubuntu-20.04
     strategy:
       # This prevents cancellation of matrix job runs, if one/two already failed and let the
       # rest matrix jobs be executed anyway.
       fail-fast: false
       matrix:
-        php: [ '7.4', '8.0', '8.1', '8.2', '8.3' ]
+        php: [ '8.2', '8.3' ]
         composerInstall: [ 'composerInstallLowest', 'composerInstallHighest' ]
     steps:
       - name: Checkout
         uses: actions/checkout@v3
 
-      - name: Validate composer.json and composer.lock
-        run: Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -s composer -e 'validate'
-
       - name: Install testing system
-        run: Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -s ${{ matrix.composerInstall }}
+        run: Build/Scripts/runTests.sh -t 13 -p ${{ matrix.php }}  -s ${{ matrix.composerInstall }}
 
       - name: Lint PHP
-        run: Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -s lint
+        run: Build/Scripts/runTests.sh -t 13 -p ${{ matrix.php }} -s lint
 
       - name: Validate code against CGL
-        run: PHP_CS_FIXER_IGNORE_ENV=1 Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -s cgl -n
+        run: PHP_CS_FIXER_IGNORE_ENV=1 Build/Scripts/runTests.sh -t 13 -p ${{ matrix.php }} -s cgl -n
 
       - name: Unit Tests
-        run: Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -s unit
+        run: Build/Scripts/runTests.sh -t 13 -p ${{ matrix.php }} -s unit
 
       - name: Functional Tests with mariadb and mysqli
-        run: Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -d mariadb -a mysqli -s functional
+        run: Build/Scripts/runTests.sh -t 13 -p ${{ matrix.php }} -d mariadb -a mysqli -s functional
 
       - name: Functional Tests with mariadb and pdo_mysql
-        run: Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -d mariadb -a pdo_mysql -s functional
+        run: Build/Scripts/runTests.sh -t 13 -p ${{ matrix.php }} -d mariadb -a pdo_mysql -s functional
 
       - name: Functional Tests with mysql and mysqli
-        run: Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -d mysql -a mysqli -s functional
+        run: Build/Scripts/runTests.sh -t 13 -p ${{ matrix.php }} -d mysql -a mysqli -s functional
 
       - name: Functional Tests with mysql and pdo_mysql
-        run: Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -d mysql -a pdo_mysql -s functional
+        run: Build/Scripts/runTests.sh -t 13 -p ${{ matrix.php }} -d mysql -a pdo_mysql -s functional
 
       - name: Functional Tests with postgres
-        # v11 postgres functional disabled with PHP 8.2 since https://github.com/doctrine/dbal/commit/73eec6d882b99e1e2d2d937accca89c1bd91b2d7
-        # is not fixed in doctrine core v11 doctrine 2.13.9
-        if: ${{ matrix.php <= '8.1' }}
-        run: Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -d postgres -s functional
+        run: Build/Scripts/runTests.sh -t 13 -p ${{ matrix.php }} -d postgres -s functional
 
       # @todo disabled, due cross dbmns issues in code. Should be fixed first
       # - name: Functional Tests with sqlite
-      #  run: Build/Scripts/runTests.sh -t 11 -p ${{ matrix.php }} -d sqlite -s functional
\ No newline at end of file
+      #   run: Build/Scripts/runTests.sh -t 13 -p ${{ matrix.php }} -d sqlite -s functional
\ No newline at end of file
diff --git a/Build/Scripts/runTests.sh b/Build/Scripts/runTests.sh
index ef70d0fd57..9d400a0df6 100755
--- a/Build/Scripts/runTests.sh
+++ b/Build/Scripts/runTests.sh
@@ -141,11 +141,11 @@ Options:
             - 8.2: use PHP 8.2
             - 8.3: use PHP 8.3
 
-    -t <11|12>
+    -t <12|13>
         Only with -s composerUpdate
         Specifies the TYPO3 core major version to be used
-            - 11 (default): use TYPO3 core v11
-            - 12: use TYPO3 core v12
+            - 12 (default): use TYPO3 core v12
+            - 13: use TYPO3 core v13
 
     -e "<composer, phpunit or codeception options>"
         Only with -s functional|unit|composer
@@ -267,13 +267,13 @@ while getopts ":s:a:d:i:j:k:p:t:e:xy:z:nhuv" OPT; do
             ;;
         p)
             PHP_VERSION=${OPTARG}
-            if ! [[ ${PHP_VERSION} =~ ^(7.4|8.0|8.1|8.2|8.3)$ ]]; then
+            if ! [[ ${PHP_VERSION} =~ ^(8.1|8.2|8.3)$ ]]; then
                 INVALID_OPTIONS+=("p ${OPTARG}")
             fi
             ;;
         t)
             TYPO3_VERSION=${OPTARG}
-            if ! [[ ${TYPO3_VERSION} =~ ^(11|12)$ ]]; then
+            if ! [[ ${TYPO3_VERSION} =~ ^(12|13)$ ]]; then
                 INVALID_OPTIONS+=("p ${OPTARG}")
             fi
             ;;