diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 31c839a..beeca86 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,8 +23,8 @@ jobs:
           - "14"
           - "16"
     steps:
-      - uses: actions/checkout@v2
-      - uses: volta-cli/action@v1
+      - uses: actions/checkout@v4
+      - uses: volta-cli/action@v4
         with:
           node-version: ${{ matrix.node }}
 
@@ -44,8 +44,8 @@ jobs:
           - "16"
 
     steps:
-      - uses: actions/checkout@v2
-      - uses: volta-cli/action@v1
+      - uses: actions/checkout@v4
+      - uses: volta-cli/action@v4
         with:
           node-version: ${{ matrix.node }}
 
@@ -74,8 +74,8 @@ jobs:
           - embroider-safe
           - embroider-optimized
     steps:
-      - uses: actions/checkout@v2
-      - uses: volta-cli/action@v1
+      - uses: actions/checkout@v4
+      - uses: volta-cli/action@v4
         with:
           node-version: 14.x
       - name: install dependencies
@@ -89,7 +89,7 @@ jobs:
     needs: [tests, try-scenarios, floating-dependencies]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           ref: ${{ github.head_ref }}
           token: ${{ secrets.ECU_TOKEN }}
@@ -106,10 +106,10 @@ jobs:
     needs: [tests, try-scenarios, floating-dependencies]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           persist-credentials: false
-      - uses: volta-cli/action@v1
+      - uses: volta-cli/action@v4
       - run: yarn install
 
       - name: Release
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index e5d4a56..398e147 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -20,8 +20,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - uses: volta-cli/action@v1
+      - uses: actions/checkout@v4
+      - uses: volta-cli/action@v4
 
       - run: yarn install --frozen-lockfile
 
@@ -36,8 +36,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - uses: volta-cli/action@v1
+      - uses: actions/checkout@v4
+      - uses: volta-cli/action@v4
       - uses: actions/cache@v2
         with:
           path: '**/node_modules'
@@ -56,8 +56,8 @@ jobs:
   #   runs-on: ubuntu-latest
 
   #   steps:
-  #   - uses: actions/checkout@v2
-  #   - uses: volta-cli/action@v1
+  #   - uses: actions/checkout@v4
+  #   - uses: volta-cli/action@v4
 
   #   - run: yarn install
   #   - run: yarn lint:docs
@@ -69,8 +69,8 @@ jobs:
   #   runs-on: ubuntu-latest
 
   #   steps:
-  #   - uses: actions/checkout@v2
-  #   - uses: volta-cli/action@v1
+  #   - uses: actions/checkout@v4
+  #   - uses: volta-cli/action@v4
 
   #   - run: yarn install
   #   - run: yarn lint:docs-js
@@ -80,9 +80,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
-    - uses: volta-cli/action@v1
+    - uses: volta-cli/action@v4
     - uses: wagoid/commitlint-github-action@v4.1.9
diff --git a/.github/workflows/types.yml b/.github/workflows/types.yml
index d011a98..1c0dd25 100644
--- a/.github/workflows/types.yml
+++ b/.github/workflows/types.yml
@@ -20,8 +20,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - uses: volta-cli/action@v1
+      - uses: actions/checkout@v4
+      - uses: volta-cli/action@v4
 
       - run: yarn install --frozen-lockfile
 
diff --git a/package.json b/package.json
index 177dfdc..90f23a6 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,6 @@
     "@commitlint/cli": "^16.2.3",
     "@commitlint/config-conventional": "^16.2.1",
     "@ember/optional-features": "^2.0.0",
-    "@ember/string": "^3.1.1",
     "@ember/test-helpers": "^2.6.0",
     "@ember/test-waiters": "~3.0.1",
     "@embroider/macros": "^1.0.0",
diff --git a/yarn.lock b/yarn.lock
index 157955d..0b07840 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1163,13 +1163,6 @@
     mkdirp "^1.0.4"
     silent-error "^1.1.1"
 
-"@ember/string@^3.1.1":
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/@ember/string/-/string-3.1.1.tgz#0a5ac0d1e4925259e41d5c8d55ef616117d47ff0"
-  integrity sha512-UbXJ+k3QOrYN4SRPHgXCqYIJ+yWWUg1+vr0H4DhdQPTy8LJfyqwZ2tc5uqpSSnEXE+/1KopHBE5J8GDagAg5cg==
-  dependencies:
-    ember-cli-babel "^7.26.6"
-
 "@ember/test-helpers@^2.6.0":
   version "2.7.0"
   resolved "https://registry.yarnpkg.com/@ember/test-helpers/-/test-helpers-2.7.0.tgz#d8e08b614cdd5eac647689d655e78e1de725f474"