diff --git a/jenkins/check-for-build.jenkinsfile b/jenkins/check-for-build.jenkinsfile
index 791f787d1f..14b5abee66 100644
--- a/jenkins/check-for-build.jenkinsfile
+++ b/jenkins/check-for-build.jenkinsfile
@@ -23,6 +23,7 @@ pipeline {
     }
     triggers {
         parameterizedCron '''
+            H 1 * * * %INPUT_MANIFEST=2.18.1/opensearch-2.18.1.yml;TARGET_JOB_NAME=distribution-build-opensearch;BUILD_PLATFORM=linux windows;BUILD_DISTRIBUTION=tar rpm deb zip;TEST_MANIFEST=2.18.1/opensearch-2.18.1-test.yml;TEST_PLATFORM=linux;TEST_DISTRIBUTION=tar
             H 1 * * * %INPUT_MANIFEST=1.3.20/opensearch-dashboards-1.3.20.yml;TARGET_JOB_NAME=distribution-build-opensearch-dashboards;BUILD_PLATFORM=linux windows;BUILD_DISTRIBUTION=tar rpm deb zip;TEST_MANIFEST=1.3.20/opensearch-dashboards-1.3.20-test.yml;TEST_PLATFORM=linux;TEST_DISTRIBUTION=tar
             H 1 * * * %INPUT_MANIFEST=2.19.0/opensearch-2.19.0.yml;TARGET_JOB_NAME=distribution-build-opensearch;BUILD_PLATFORM=linux windows;BUILD_DISTRIBUTION=tar rpm deb zip;TEST_MANIFEST=2.19.0/opensearch-2.19.0-test.yml;TEST_PLATFORM=linux;TEST_DISTRIBUTION=tar
             H 4 * * * %INPUT_MANIFEST=1.3.20/opensearch-1.3.20.yml;TARGET_JOB_NAME=distribution-build-opensearch;BUILD_PLATFORM=linux windows;BUILD_DISTRIBUTION=tar rpm deb zip;TEST_MANIFEST=1.3.20/opensearch-1.3.20-test.yml;TEST_PLATFORM=linux;TEST_DISTRIBUTION=tar
diff --git a/jenkins/integ-test-notification.jenkinsfile b/jenkins/integ-test-notification.jenkinsfile
index 4df7317466..db47b15f19 100644
--- a/jenkins/integ-test-notification.jenkinsfile
+++ b/jenkins/integ-test-notification.jenkinsfile
@@ -28,6 +28,7 @@ pipeline {
     }
     triggers {
         parameterizedCron('''
+            H */6 * * * %INPUT_MANIFEST=2.18.1/opensearch-2.18.1.yml
             H */6 * * * %INPUT_MANIFEST=1.3.20/opensearch-dashboards-1.3.20.yml
             H */6 * * * %INPUT_MANIFEST=2.19.0/opensearch-2.19.0.yml
             H */6 * * * %INPUT_MANIFEST=2.18.0/opensearch-2.18.0.yml
diff --git a/manifests/2.18.1/opensearch-2.18.1-test.yml b/manifests/2.18.1/opensearch-2.18.1-test.yml
new file mode 100644
index 0000000000..1136375950
--- /dev/null
+++ b/manifests/2.18.1/opensearch-2.18.1-test.yml
@@ -0,0 +1,151 @@
+---
+schema-version: '1.0'
+name: OpenSearch
+ci:
+  image:
+    name: opensearchstaging/ci-runner:ci-runner-al2-opensearch-build-v1
+    args: -e JAVA_HOME=/opt/java/openjdk-21
+components:
+  - name: alerting
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+      additional-cluster-configs:
+        plugins.destination.host.deny_list:
+          - 10.0.0.0/8
+          - 127.0.0.1
+    bwc-test:
+      test-configs:
+        - with-security
+  - name: anomaly-detection
+    integ-test:
+      build-dependencies:
+        - job-scheduler
+      test-configs:
+        - with-security
+        - without-security
+    bwc-test:
+      test-configs:
+        - with-security
+  - name: flow-framework
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+  - name: asynchronous-search
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+    bwc-test:
+      test-configs:
+        - with-security
+  - name: cross-cluster-replication
+    integ-test:
+      topology:
+        - cluster_name: leader
+          data_nodes: 2
+        - cluster_name: follower
+          data_nodes: 2
+      test-configs:
+        - with-security
+        - without-security
+  - name: geospatial
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+  - name: index-management
+    integ-test:
+      build-dependencies:
+        - job-scheduler
+      test-configs:
+        - with-security
+        - without-security
+      additional-cluster-configs:
+        path.repo:
+          - /tmp
+    bwc-test:
+      test-configs:
+        - with-security
+  - name: k-NN
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+  - name: ml-commons
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+  - name: neural-search
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+  - name: notifications
+    working-directory: notifications
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+    bwc-test:
+      test-configs:
+        - with-security
+  - name: opensearch-observability
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+    bwc-test:
+      test-configs:
+        - with-security
+  - name: opensearch-reports
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+  - name: security
+    integ-test:
+      test-configs:
+        - with-security
+  - name: security-analytics
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+  - name: sql
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+      additional-cluster-configs:
+        script.context.field.max_compilations_rate: 1000/1m
+        plugins.query.datasources.encryption.masterkey: 4fc8fee6a3fd7d6ca01772e5
+    bwc-test:
+      test-configs:
+        - with-security
+  - name: custom-codecs
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+  - name: skills
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+  - name: query-insights
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+  - name: opensearch-system-templates
+    integ-test:
+      test-configs:
+        - with-security
+        - without-security
+      additional-cluster-configs:
+        opensearch.experimental.feature.application_templates.enabled: true
+        cluster.application_templates.enabled: true
diff --git a/manifests/2.18.1/opensearch-2.18.1.yml b/manifests/2.18.1/opensearch-2.18.1.yml
new file mode 100644
index 0000000000..95ca393083
--- /dev/null
+++ b/manifests/2.18.1/opensearch-2.18.1.yml
@@ -0,0 +1,199 @@
+---
+schema-version: '1.1'
+build:
+  name: OpenSearch
+  version: 2.18.1
+ci:
+  image:
+    name: opensearchstaging/ci-runner:ci-runner-al2-opensearch-build-v1
+    args: -e JAVA_HOME=/opt/java/openjdk-21
+components:
+  - name: OpenSearch
+    repository: https://github.com/opensearch-project/OpenSearch.git
+    ref: '2.18'
+  - name: common-utils
+    repository: https://github.com/opensearch-project/common-utils.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+  - name: job-scheduler
+    repository: https://github.com/opensearch-project/job-scheduler.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+  - name: security
+    repository: https://github.com/opensearch-project/security.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+  - name: k-NN
+    repository: https://github.com/opensearch-project/k-NN.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+  - name: geospatial
+    repository: https://github.com/opensearch-project/geospatial.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - job-scheduler
+  - name: cross-cluster-replication
+    repository: https://github.com/opensearch-project/cross-cluster-replication.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - common-utils
+  - name: ml-commons
+    repository: https://github.com/opensearch-project/ml-commons.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - common-utils
+  - name: neural-search
+    repository: https://github.com/opensearch-project/neural-search.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - ml-commons
+      - k-NN
+  - name: notifications-core
+    repository: https://github.com/opensearch-project/notifications.git
+    ref: '2.18'
+    working_directory: notifications
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - common-utils
+  - name: notifications
+    repository: https://github.com/opensearch-project/notifications.git
+    ref: '2.18'
+    working_directory: notifications
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - common-utils
+  - name: opensearch-observability
+    repository: https://github.com/opensearch-project/observability.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - common-utils
+  - name: opensearch-reports
+    repository: https://github.com/opensearch-project/reporting.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - common-utils
+      - job-scheduler
+  - name: sql
+    repository: https://github.com/opensearch-project/sql.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - ml-commons
+  - name: asynchronous-search
+    repository: https://github.com/opensearch-project/asynchronous-search.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - common-utils
+  - name: anomaly-detection
+    repository: https://github.com/opensearch-project/anomaly-detection.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - common-utils
+      - job-scheduler
+  - name: alerting
+    repository: https://github.com/opensearch-project/alerting.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - common-utils
+  - name: security-analytics
+    repository: https://github.com/opensearch-project/security-analytics.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - common-utils
+      - alerting
+      - job-scheduler
+  - name: index-management
+    repository: https://github.com/opensearch-project/index-management.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - common-utils
+      - job-scheduler
+  - name: performance-analyzer
+    repository: https://github.com/opensearch-project/performance-analyzer.git
+    ref: '2.18'
+    platforms:
+      - linux
+  - name: custom-codecs
+    repository: https://github.com/opensearch-project/custom-codecs.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+  - name: flow-framework
+    repository: https://github.com/opensearch-project/flow-framework.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - common-utils
+  - name: skills
+    repository: https://github.com/opensearch-project/skills.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+    depends_on:
+      - job-scheduler
+      - anomaly-detection
+      - sql
+      - ml-commons
+  - name: query-insights
+    repository: https://github.com/opensearch-project/query-insights.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows
+  - name: opensearch-system-templates
+    repository: https://github.com/opensearch-project/opensearch-system-templates.git
+    ref: '2.18'
+    platforms:
+      - linux
+      - windows