diff --git a/Build/bamboo/src/main/java/core/AbstractCoreSpec.java b/Build/bamboo/src/main/java/core/AbstractCoreSpec.java
index 2b06cf814f17dd72932e77186ebb2d9d4282c42d..b53a205c476abf9238300bd17a76350331e5fe27 100644
--- a/Build/bamboo/src/main/java/core/AbstractCoreSpec.java
+++ b/Build/bamboo/src/main/java/core/AbstractCoreSpec.java
@@ -45,7 +45,7 @@ abstract public class AbstractCoreSpec {
     protected static String projectName = "TYPO3 Core";
     protected static String projectKey = "CORE";
 
-    protected String composerRootVersionEnvironment = "COMPOSER_ROOT_VERSION=9.1.0";
+    protected String composerRootVersionEnvironment = "COMPOSER_ROOT_VERSION=9.2.0@dev";
 
     protected String testingFrameworkBuildPath = "vendor/typo3/testing-framework/Resources/Core/Build/";