Update deploy.yaml
diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index eac711c..5f38538 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -34,6 +34,7 @@
           sudo mv hugo /usr/bin/
           npm install -D --save postcss-cli
           npm install -D --save autoprefixer
+          npm install -D --save postcss
           npm i
 
       - name: Build