diff --git a/package.json b/package.json
index 8f7de0a..e1ea69f 100644
--- a/package.json
+++ b/package.json
@@ -50,6 +50,7 @@
     "vue-template-compiler": "^2.5.16"
   },
   "peerDependencies": {
+    "postcss": ">=6.0",
     "vue-template-compiler": "*"
   },
   "dependencies": {
diff --git a/src/assembler.ts b/src/assembler.ts
index 46ddc76..962e641 100644
--- a/src/assembler.ts
+++ b/src/assembler.ts
@@ -77,7 +77,7 @@ export function assembleFromSource(
   // language=JavaScript
   const inlineCreateInjector = `function __vue_create_injector__() {
   const head = document.head || document.getElementsByTagName('head')[0]
-  const styles = {}
+  const styles = __vue_create_injector__.styles || (__vue_create_injector__.styles = {})
   const isOldIE =
     typeof navigator !== 'undefined' &&
     /msie [6-9]\\\\b/.test(navigator.userAgent.toLowerCase())