diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index c4f52d9..7062149 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -19,12 +19,12 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version: 18
-          cache: yarn
+          cache: npm
 
       - name: Install dependencies
-        run: yarn install --frozen-lockfile
+        run: npm install --frozen-lockfile
       - name: Build website
-        run: yarn build
+        run: npm run build
 
       # Popular action to deploy to GitHub Pages:
       # Docs: https://github.com/peaceiris/actions-gh-pages#%EF%B8%8F-docusaurus
diff --git a/.github/workflows/test-deploy.yml b/.github/workflows/test-deploy.yml
index b311453..23d6323 100644
--- a/.github/workflows/test-deploy.yml
+++ b/.github/workflows/test-deploy.yml
@@ -16,9 +16,9 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version: 18
-          cache: yarn
+          cache: npm
 
       - name: Install dependencies
-        run: yarn install --frozen-lockfile
+        run: npm install --frozen-lockfile
       - name: Test build website
-        run: yarn build
+        run: npm run build
diff --git a/README.md b/README.md
index 4946716..9610d11 100644
--- a/README.md
+++ b/README.md
@@ -5,13 +5,13 @@ This website is built using [Docusaurus 2](https://docusaurus.io/), a modern sta
 ### Installation
 
 ```
-$ yarn
+$ npm i
 ```
 
 ### Local Development
 
 ```
-$ yarn start
+$ npm start
 ```
 
 This command starts a local development server and opens up a browser window. Most changes are reflected live without having to restart the server.
@@ -19,7 +19,7 @@ This command starts a local development server and opens up a browser window. Mo
 ### Build
 
 ```
-$ yarn build
+$ npm run build
 ```
 
 This command generates static content into the `build` directory and can be served using any static contents hosting service.
@@ -29,11 +29,11 @@ This command generates static content into the `build` directory and can be serv
 Using SSH:
 
 ```
-$ USE_SSH=true yarn deploy
+$ USE_SSH=true npm run deploy
 ```
 
 Not using SSH:
 
 ```
-$ GIT_USER=<Your GitHub username> yarn deploy
+$ GIT_USER=<Your GitHub username> npm run deploy
 ```