diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5e4ceca0a..b4e20da5b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: denoland/setup-deno@v1
         with:
           deno-version: v1.x
diff --git a/.github/workflows/ci_browser.yml b/.github/workflows/ci_browser.yml
index 4054c4d66..eedd754ca 100644
--- a/.github/workflows/ci_browser.yml
+++ b/.github/workflows/ci_browser.yml
@@ -13,11 +13,11 @@ jobs:
   pages:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: denoland/setup-deno@v1
         with:
           deno-version: v1.x
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
           node-version: v18.x
       - run: |
@@ -83,8 +83,8 @@ jobs:
     needs: pages
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
       - uses: microsoft/playwright-github-action@v1
       - working-directory: ./test/runtimes/browsers
         run: npm install && npx playwright install && npx playwright test
diff --git a/.github/workflows/ci_bun.yml b/.github/workflows/ci_bun.yml
index db8d94e86..c24d798ce 100644
--- a/.github/workflows/ci_bun.yml
+++ b/.github/workflows/ci_bun.yml
@@ -15,14 +15,14 @@ jobs:
 
     strategy:
       matrix:
-        bun-version: [0.6, 0.7, 0.8, 1.0]
+        bun-version: [0.6.x, 0.7.x, 0.8.x, 1.x]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: denoland/setup-deno@v1
         with:
           deno-version: v1.x
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
           node-version: v20.x
       - run: |
diff --git a/.github/workflows/ci_cloudflare.yml b/.github/workflows/ci_cloudflare.yml
index ca1bb2063..5494c6c44 100644
--- a/.github/workflows/ci_cloudflare.yml
+++ b/.github/workflows/ci_cloudflare.yml
@@ -13,11 +13,11 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: denoland/setup-deno@v1
         with:
           deno-version: v1.x
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
           node-version: v20.x
       - run: |
diff --git a/.github/workflows/ci_node.yml b/.github/workflows/ci_node.yml
index 6908c8a04..768007b7d 100644
--- a/.github/workflows/ci_node.yml
+++ b/.github/workflows/ci_node.yml
@@ -12,11 +12,11 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [16.x, 17.x, 18.x, 19.x, 20.x]
+        node-version: [16.x, 17.x, 18.x, 19.x, 20.x, 21.x]
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
       - uses: denoland/setup-deno@v1
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 557fa6bc7..8256f855d 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -38,7 +38,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index a1fd69d94..d7edf7577 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -8,8 +8,8 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 20
           registry-url: https://registry.npmjs.org/
@@ -28,8 +28,8 @@ jobs:
   publish-core:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 20
           registry-url: https://registry.npmjs.org/
@@ -49,8 +49,8 @@ jobs:
   publish-dhkem-x25519:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 20
           registry-url: https://registry.npmjs.org/
@@ -70,8 +70,8 @@ jobs:
   publish-dhkem-x448:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 20
           registry-url: https://registry.npmjs.org/
@@ -91,8 +91,8 @@ jobs:
   publish-chacha20poly1305:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 20
           registry-url: https://registry.npmjs.org/
@@ -112,8 +112,8 @@ jobs:
   publish-hybridkem-x25519-kyber768:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 20
           registry-url: https://registry.npmjs.org/
@@ -133,8 +133,8 @@ jobs:
   publish-dhkem-secp256k1:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 20
           registry-url: https://registry.npmjs.org/