diff --git a/.ci/buildchain-project-dependencies.yaml b/.ci/buildchain-project-dependencies.yaml
index c5c80d77c2d..951427e3824 100644
--- a/.ci/buildchain-project-dependencies.yaml
+++ b/.ci/buildchain-project-dependencies.yaml
@@ -24,12 +24,8 @@ dependencies:
       dependencies:
         default:
           - source: development
-            target: 9.x
-          - source: 8.x
             target: main
       dependant:
         default:
-          - source: 9.x
-            target: development
           - source: main
-            target: 8.x
+            target: development
diff --git a/.ci/jenkins/config/branch.yaml b/.ci/jenkins/config/branch.yaml
index 7c9031d9491..316bb688025 100644
--- a/.ci/jenkins/config/branch.yaml
+++ b/.ci/jenkins/config/branch.yaml
@@ -33,7 +33,7 @@ repositories:
   job_display_name: optaplanner
 - name: incubator-kie-optaplanner-quickstarts
   job_display_name: optaplanner-quickstarts
-  branch: 8.x
+  branch: development
 # Not migrated to Apache yet
 # - name: incubator-kie-optaplanner-website
 #   job_display_name: optaplanner-website
diff --git a/.ci/jenkins/project/Jenkinsfile.nightly b/.ci/jenkins/project/Jenkinsfile.nightly
index 0339dc30b03..3607906055b 100644
--- a/.ci/jenkins/project/Jenkinsfile.nightly
+++ b/.ci/jenkins/project/Jenkinsfile.nightly
@@ -88,9 +88,7 @@ pipeline {
                     addSkipIntegrationTestsParam(buildParams)
                     String quickstartsBranch
                     switch (getBuildBranch()) {
-                        case 'main': quickstartsBranch = '8.x'
-                            break
-                        case '9.x': quickstartsBranch = 'development'
+                        case 'main': quickstartsBranch = 'development'
                             break
                         default : quickstartsBranch = getBuildBranch()
                     }