diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index c0c28d80c..07614bbc2 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -17,9 +17,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: volta-cli/action@v1
-        with:
-          node-version: 10.x
+      - uses: volta-cli/action@v4
       - run: yarn install --frozen-lockfile --ignore-engines
       - run: yarn lint
       - run: yarn test
@@ -31,9 +29,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: volta-cli/action@v1
-        with:
-          node-version: 12.x
+      - uses: volta-cli/action@v4
       - run: yarn install --no-lockfile
       - run: yarn test
 
@@ -64,9 +60,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: volta-cli/action@v1
-        with:
-          node-version: 12.x
+      - uses: volta-cli/action@v4
       - name: install dependencies
         run: yarn install --frozen-lockfile
       - name: test
@@ -74,7 +68,7 @@ jobs:
 
   types:
     runs-on: ubuntu-latest
-      
+
     needs: test
 
     strategy:
@@ -86,9 +80,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: volta-cli/action@v1
-        with:
-          node-version: 12.x
+      - uses: volta-cli/action@v4
       - name: install dependencies
         run: yarn install --frozen-lockfile
       - name: install TS version
diff --git a/config/ember-try.js b/config/ember-try.js
index 55ab9b625..85b756d6c 100644
--- a/config/ember-try.js
+++ b/config/ember-try.js
@@ -100,6 +100,7 @@ module.exports = async function () {
         npm: {
           devDependencies: {
             'ember-source': await getChannelURL('release'),
+            '@ember/string': '3.1.1',
           },
         },
       },
@@ -108,6 +109,7 @@ module.exports = async function () {
         npm: {
           devDependencies: {
             'ember-source': await getChannelURL('beta'),
+            '@ember/string': '3.1.1',
           },
         },
       },
@@ -116,6 +118,7 @@ module.exports = async function () {
         npm: {
           devDependencies: {
             'ember-source': await getChannelURL('canary'),
+            '@ember/string': '3.1.1',
           },
         },
       },