diff --git a/Tests/Functional/RequestHandling/Fixtures/Extensions/form_caching_tests/composer.json b/Tests/Functional/RequestHandling/Fixtures/Extensions/form_caching_tests/composer.json
index 210ad74f..a5455f0d 100644
--- a/Tests/Functional/RequestHandling/Fixtures/Extensions/form_caching_tests/composer.json
+++ b/Tests/Functional/RequestHandling/Fixtures/Extensions/form_caching_tests/composer.json
@@ -4,7 +4,7 @@
 	"description": "",
 	"license": ["GPL-2.0-or-later"],
 	"require": {
-		"typo3/cms-core": "12.4.*@dev"
+		"typo3/cms-core": "12.4.5"
 	},
 	"autoload": {
 		"psr-4": {
diff --git a/Tests/Functional/Service/Fixtures/Extensions/form_labels/composer.json b/Tests/Functional/Service/Fixtures/Extensions/form_labels/composer.json
index 7b98c087..bafd9949 100644
--- a/Tests/Functional/Service/Fixtures/Extensions/form_labels/composer.json
+++ b/Tests/Functional/Service/Fixtures/Extensions/form_labels/composer.json
@@ -4,7 +4,7 @@
 	"description": "",
 	"license": ["GPL-2.0-or-later"],
 	"require": {
-		"typo3/cms-core": "12.4.*@dev"
+		"typo3/cms-core": "12.4.5"
 	},
 	"extra": {
 		"typo3/cms": {
diff --git a/composer.json b/composer.json
index bc377767..121571f5 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
 	"require": {
 		"psr/http-message": "^1.1 || ^2.0",
 		"symfony/expression-language": "^6.2",
-		"typo3/cms-core": "12.4.*@dev"
+		"typo3/cms-core": "12.4.5"
 	},
 	"suggest": {
 		"typo3/cms-filelist": "Listing of files in the directory",