diff --git a/.github/workflows/master-e2e.yaml b/.github/workflows/master-e2e.yaml
index 5a840c8..b2ac842 100644
--- a/.github/workflows/master-e2e.yaml
+++ b/.github/workflows/master-e2e.yaml
@@ -102,6 +102,9 @@ on:
         required: true
         type: string
         default: '@install @short @full'
+      turtles_operator_version:
+        description: Turtles Operator Version; only to be used when nightly chart is set to false; default - latest stable version
+        type: string
 
 jobs:
   create-runner:
@@ -328,6 +331,7 @@ jobs:
           AZURE_LOCATION: ${{ secrets.AZURE_LOCATION }}
           QASE_RUN_ID: ${{ needs.pre-qase.outputs.qase_run_id }}
           GREPTAGS: ${{ inputs.grep_test_by_tag }}
+          TURTLES_OPERATOR_VERSION: ${{inputs.turtles_operator_version}}
           SPEC: |
             e2e/unit_tests/first_connection.spec.ts
             e2e/unit_tests/user.spec.ts
@@ -386,6 +390,7 @@ jobs:
           if ${{ inputs.ui_account != '' }}; then
             echo "UI User: ${{ inputs.ui_account }}" >> ${GITHUB_STEP_SUMMARY}
           fi
+          echo "Rancher Turtles Operator Version: ${{ inputs.turtles_operator_version }}" >> ${GITHUB_STEP_SUMMARY}
           echo "### Kubernetes" >> ${GITHUB_STEP_SUMMARY}
           echo "K3s on Rancher Manager: ${{ env.INSTALL_K3S_VERSION }}" >> ${GITHUB_STEP_SUMMARY}
 
diff --git a/.github/workflows/ui-e2e.yaml b/.github/workflows/ui-e2e.yaml
index b497922..b28d9d4 100644
--- a/.github/workflows/ui-e2e.yaml
+++ b/.github/workflows/ui-e2e.yaml
@@ -17,6 +17,9 @@ on:
         description: Rancher Manager channel/version/head_version to use for installation
         default: latest/devel/2.10
         type: string
+      turtles_operator_version:
+        description: Rancher Turtles operator version to test
+        type: string
       grep_test_by_tag:
         description: Grep tags. For multiple selection separate with spaces. Keep always @install
         required: true
@@ -53,4 +56,5 @@ jobs:
       qase_run_id: ${{ inputs.qase_run_id || 'auto' }}
       grep_test_by_tag: ${{ inputs.grep_test_by_tag || '@install @short' }}
       operator_nightly_chart: ${{ inputs.operator_nightly_chart == true || (github.event_name == 'schedule' && true) }}
+      turtles_operator_version: ${{ inputs.turtles_operator_version }}
 
diff --git a/tests/cypress/latest/e2e/unit_tests/turtles_operator.spec.ts b/tests/cypress/latest/e2e/unit_tests/turtles_operator.spec.ts
index cdedef3..86ec022 100644
--- a/tests/cypress/latest/e2e/unit_tests/turtles_operator.spec.ts
+++ b/tests/cypress/latest/e2e/unit_tests/turtles_operator.spec.ts
@@ -26,6 +26,20 @@ describe('Install Turtles Operator', { tags: '@install' }, () => {
     cypressLib.burgerMenuToggle();
   });
 
+  it("Change helm charts to Include Prerelease Versions", () => {
+    // this test should be run before the turtles repository is added; so that it can fetch the prereleased versions
+
+    // toggle the navigation menu to a close
+    cypressLib.burgerMenuToggle();
+
+    cy.getBySel('nav_header_showUserMenu').click();
+    cy.contains('Preferences').click();
+    cy.contains("Include Prerelease Versions").click();
+    cy.reload();
+    // check that the prerelease version is selected by ensuring it does not have `bg-disabled` class
+    cy.contains("Include Prerelease Versions").should('not.have.class', 'bg-disabled');
+  })
+
   it('Add turtles repo', { retries: 2 }, () => {
     var turtlesHelmRepo = Cypress.env('chartmuseum_repo')
     // if the env var is empty or not defined at all; use the normal repo
@@ -45,7 +59,16 @@ describe('Install Turtles Operator', { tags: '@install' }, () => {
       const questions = [
         { menuEntry: 'Rancher Turtles Features Settings', checkbox: 'Seamless integration with Fleet and CAPI' }
       ];
-      cy.installApp('Rancher Turtles', 'rancher-turtles-system', questions);
+
+      var turtlesVersion = Cypress.env('turtles_operator_version')
+
+      // if operator nightly chart is to be used, ignore the turtles version
+      var turtlesHelmRepo = Cypress.env('chartmuseum_repo')
+      if (turtlesHelmRepo != "" && turtlesHelmRepo != undefined) {
+        turtlesVersion = ""
+      }
+
+      cy.installApp('Rancher Turtles', turtlesVersion, 'rancher-turtles-system', questions);
     })
   );
 
diff --git a/tests/cypress/latest/plugins/index.ts b/tests/cypress/latest/plugins/index.ts
index 30c8991..894a1f7 100644
--- a/tests/cypress/latest/plugins/index.ts
+++ b/tests/cypress/latest/plugins/index.ts
@@ -32,6 +32,7 @@ module.exports = (on: Cypress.PluginEvents, config: Cypress.PluginConfigOptions)
   config.baseUrl = url.replace(/\/$/,);
   config.env.cache_session = process.env.CACHE_SESSION || false;
   config.env.chartmuseum_repo = process.env.CHARTMUSEUM_REPO;
+  config.env.turtles_operator_version = process.env.TURTLES_OPERATOR_VERSION;
   config.env.cluster = process.env.CLUSTER_NAME;
   config.env.capi_ui_version = process.env.CAPI_UI_VERSION;
   config.env.k8s_version = process.env.K8S_VERSION_TO_PROVISION;
diff --git a/tests/cypress/latest/support/commands.ts b/tests/cypress/latest/support/commands.ts
index 1897725..ff89197 100644
--- a/tests/cypress/latest/support/commands.ts
+++ b/tests/cypress/latest/support/commands.ts
@@ -221,11 +221,16 @@ Cypress.Commands.add('addCloudCredsAzure', (name: string, clientID: string, clie
 // You can optionally provide an array of questions and answer them before the installation starts
 // Example1: cy.installApp('Alerting', 'default', [{ menuEntry: '(None)', checkbox: 'Enable Microsoft Teams' }]);
 // Example2: cy.installApp('Rancher Turtles', 'rancher-turtles-system', [{ menuEntry: 'Rancher Turtles Features Settings', checkbox: 'Seamless integration with Fleet and CAPI'},{ menuEntry: 'Rancher webhook cleanup settings', inputBoxTitle: 'Webhook Cleanup Image', inputBoxValue: 'registry.k8s.io/kubernetes/kubectl:v1.28.0'}]);
-Cypress.Commands.add('installApp', (appName, namespace, questions) => {
+Cypress.Commands.add('installApp', (appName, version, namespace, questions) => {
   cy.get('.nav').contains('Apps').click();
   cy.contains('Featured Charts').should('be.visible');
   cy.contains(appName, { timeout: 60000 }).click();
   cy.contains('Charts: ' + appName);
+
+  if (version != undefined && version != "") {
+    cy.contains(version).click();
+    cy.url().should("contain", version)
+  }
   cy.clickButton('Install');
   cy.contains('.outer-container > .header', appName);
   cy.clickButton('Next');
diff --git a/tests/cypress/latest/support/e2e.ts b/tests/cypress/latest/support/e2e.ts
index 6e81321..94930a7 100644
--- a/tests/cypress/latest/support/e2e.ts
+++ b/tests/cypress/latest/support/e2e.ts
@@ -26,7 +26,7 @@ declare global {
       forceUpdateFleetGitRepo(repoName: string, workspace?: string): Chainable<Element>;
       checkFleetGitRepo(repoName: string, workspace?: string): Chainable<Element>;
       accesMenuSelection(firstAccessMenu: string, secondAccessMenu?: string): Chainable<Element>;
-      installApp(appName: string, namespace: string, questions?: any): Chainable<Element>;
+      installApp(appName: string, namespace: string, version: string, questions?: any): Chainable<Element>;
       deleteCluster(clusterName: string): Chainable<Element>;
       searchCluster(clusterName: string): Chainable<Element>;
       createNamespace(namespace: string): Chainable<Element>;
diff --git a/tests/scripts/start-cypress-tests b/tests/scripts/start-cypress-tests
index 9e92f4a..2fc3ef8 100755
--- a/tests/scripts/start-cypress-tests
+++ b/tests/scripts/start-cypress-tests
@@ -21,6 +21,7 @@ docker run -v $PWD:/workdir -w /workdir \
     -e CYPRESS_TAGS=$CYPRESS_TAGS \
     -e CAPI_UI_VERSION=$CAPI_UI_VERSION \
     -e CHARTMUSEUM_REPO=$CHARTMUSEUM_REPO \
+    -e TURTLES_OPERATOR_VERSION=$TURTLES_OPERATOR_VERSION \
     -e K8S_UPSTREAM_VERSION=$K8S_UPSTREAM_VERSION \
     -e OPERATOR_REPO=$OPERATOR_REPO \
     -e RANCHER_VERSION=$RANCHER_VERSION \