diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c1b2067..154bac5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,17 +10,13 @@ jobs:
   test:
     runs-on: ubuntu-latest
 
-    strategy:
-      matrix:
-        node-version: [18.x, 20.x]
-
     steps:
       - uses: actions/checkout@v4
 
-      - name: Use Node.js ${{ matrix.node-version }}
+      - name: Use Node.js 20
         uses: actions/setup-node@v4
         with:
-          node-version: ${{ matrix.node-version }}
+          node-version: 20
 
       - run: npm install
 
@@ -30,7 +26,6 @@ jobs:
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
-        if: matrix.node-version == '18.x'
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
@@ -40,10 +35,10 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Use Node.js 18
+      - name: Use Node.js 20
         uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
 
       - run: npm install
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 66d2034..a25e26f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -27,7 +27,7 @@ jobs:
       - uses: actions/setup-node@v4
         if: ${{ steps.release.outputs.release_created }}
         with:
-          node-version: 18
+          node-version: 20
           registry-url: 'https://registry.npmjs.org'
 
       - run: npm ci