diff --git a/.drone.yml b/.drone.yml
index 1cdc385..ca26def 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -4,7 +4,7 @@ name: default
 
 steps:
   - name: build
-    image: node
+    image: node:lts
     commands:
       - npm install
       - npm run build
diff --git a/package.json b/package.json
index 6e0d416..df994d7 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   },
   "devDependencies": {
     "autoprefixer": "10.2.6",
-    "cssnano": "4.1.11",
+    "cssnano": "5.0.5",
     "del": "6.0.0",
     "gulp": "4.0.2",
     "gulp-concat": "2.6.1",