diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index adacffa..014b17b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x, 20.x]
+        node-version: [20.x]
 
     steps:
     - uses: actions/checkout@v4
@@ -21,7 +21,6 @@ jobs:
       uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
-        cache: 'npm'
     
     - name: Setup Bun
       uses: oven-sh/setup-bun@v1
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index fc69138..0fc0a2e 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x, 20.x]
+        node-version: [20.x]
 
     steps:
     - uses: actions/checkout@v4
@@ -21,7 +21,6 @@ jobs:
       uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
-        cache: 'npm'
     
     - name: Setup Bun
       uses: oven-sh/setup-bun@v1