diff --git a/ci/jenkinsfile/milvus_build.groovy b/ci/jenkinsfile/milvus_build.groovy
index dc735caa25..5c9a038715 100644
--- a/ci/jenkinsfile/milvus_build.groovy
+++ b/ci/jenkinsfile/milvus_build.groovy
@@ -4,6 +4,10 @@ container('milvus-build-env') {
             dir ("milvus_engine") {
                 try {
                     checkout([$class: 'GitSCM', branches: [[name: "${SEMVER}"]], doGenerateSubmoduleConfigurations: false, extensions: [[$class: 'SubmoduleOption',disableSubmodules: false,parentCredentials: true,recursiveSubmodules: true,reference: '',trackingSubmodules: false]], submoduleCfg: [], userRemoteConfigs: [[credentialsId: "${params.GIT_USER}", url: "git@192.168.1.105:megasearch/milvus.git", name: 'origin', refspec: "+refs/heads/${SEMVER}:refs/remotes/origin/${SEMVER}"]]])
+                    dir ("cpp/thirdparty/knowhere/knowhere") {
+                        checkout([$class: 'GitSCM', branches: [[name: "${SEMVER}"]], doGenerateSubmoduleConfigurations: false, extensions: [[$class: 'SubmoduleOption',disableSubmodules: false,parentCredentials: true,recursiveSubmodules: true,reference: '',trackingSubmodules: false]], submoduleCfg: [], userRemoteConfigs: [[credentialsId: "${params.GIT_USER}", url: "git@192.168.1.105:megasearch/knowhere.git", name: 'origin', refspec: "+refs/heads/${SEMVER}:refs/remotes/origin/${SEMVER}"]]])
+                    }
+
                     dir ("cpp") {
                         sh "git config --global user.email \"test@zilliz.com\""
                         sh "git config --global user.name \"test\""