diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cb514733..fb8ca4f3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -116,7 +116,7 @@ jobs:
       - name: Checkout Code
         uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: volta-cli/action@v1
+        uses: volta-cli/action@v4
         with:
           node-version: ${{ matrix.node-version }}
       - name: Yarn Install
@@ -130,7 +130,7 @@ jobs:
           yarn workspace ember-cli-fastboot test:mocha
 
   try-scenarios:
-    name: "ember-try for ember-cli-fastboot: ${{ matrix.ember-try-scenario }}"
+    name: "${{ matrix.ember-try-scenario }} ember-try for ember-cli-fastboot"
     runs-on: ubuntu-latest
     timeout-minutes: 20
 
@@ -143,6 +143,8 @@ jobs:
           - ember-lts-3.24
           - ember-lts-3.28
           - ember-lts-4.4
+          - ember-lts-4.8
+          - ember-lts-4.12
           - ember-release
           - ember-beta
           - ember-canary
diff --git a/packages/ember-cli-fastboot/config/ember-try.js b/packages/ember-cli-fastboot/config/ember-try.js
index ccacb0dc..38078be5 100644
--- a/packages/ember-cli-fastboot/config/ember-try.js
+++ b/packages/ember-cli-fastboot/config/ember-try.js
@@ -51,6 +51,22 @@ module.exports = async function () {
           },
         },
       },
+      {
+        name: 'ember-lts-4.8',
+        npm: {
+          devDependencies: {
+            'ember-source': '~4.8.0',
+          },
+        },
+      },
+      {
+        name: 'ember-lts-4.12',
+        npm: {
+          devDependencies: {
+            'ember-source': '~4.12.0',
+          },
+        },
+      },
       {
         name: 'ember-release',
         npm: {