diff --git a/README.md b/README.md
index cdae3da..eeb5465 100644
--- a/README.md
+++ b/README.md
@@ -658,7 +658,7 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-yarn-
 
-      - run: yarn install
+      - run: yarn install --frozen-lockfile
       - run: yarn build
       - run: yarn export
 
@@ -761,7 +761,7 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-website-
 
-      - run: yarn install
+      - run: yarn install --frozen-lockfile
       - run: yarn build
 
       - name: Deploy