diff --git a/index.js b/index.js
index 924f53c..0763f2a 100644
--- a/index.js
+++ b/index.js
@@ -6,7 +6,7 @@ class POSTCSSInOut {
     this.options = options;
   }
 
-  process(children, callback) {
+  processPostBuild(children, callback) {
     const collection = Object.keys(children).map((j) => {
       let child = children[j];
       if (typeof child === 'object') {
@@ -68,21 +68,13 @@ class POSTCSSInOut {
         compilation.hooks.processAssets.tap(
           {
             name: 'POSTCSSInOut',
-            stage: compilation.PROCESS_ASSETS_STAGE_ADDITIONS, // see below for more stages
-            additionalAssets: true
+            stage: compilation.PROCESS_ASSETS_STAGE_ADDITIONS // see below for more stages
           },
           (assets) => {
             Object.keys(assets).map((i) => {
               if (i.indexOf('.css') !== -1) {
-                this.process(assets[i]._source._children, (results) => {
-                  assets[i]._source._children = [];
-
-                  compilation.updateAsset(
-                    i,
-                    new sources.RawSource(
-                      results
-                    )
-                  );                  
+                this.processPostBuild(assets[i]._source._children, (results) => {
+                  compilation.updateAsset(i, new sources.RawSource(results));
                 });
               }
             });
@@ -95,4 +87,4 @@ class POSTCSSInOut {
   }
 }
 
-module.exports = POSTCSSInOut;
+module.exports = POSTCSSInOut;
\ No newline at end of file
diff --git a/package.json b/package.json
index 690f523..4a767f9 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "postcss global variables",
     "postcss global features"
   ],
-  "version": "1.5.1",
+  "version": "1.5.2",
   "description": "Plugin to add pre & post build hooks for global POSTCSS features",
   "repository": "drolsen/postcss-in-out",
   "bugs": {
@@ -30,8 +30,8 @@
     "mini-css-extract-plugin": "^1.3.2",
     "postcss-import": "^13.0.0",
     "postcss-nested": "^5.0.3",
-    "webpack": "^5.10.0",
-    "webpack-cli": "^4.2.0"
+    "webpack": "^5.64.0",
+    "webpack-cli": "^4.9.1"
   },
   "dependencies": {
     "postcss": "^8.2.1",
diff --git a/test/test.plugins.js b/test/test.plugins.js
index 37bbd11..a354c87 100644
--- a/test/test.plugins.js
+++ b/test/test.plugins.js
@@ -99,8 +99,8 @@ const media = (options = {}) => {
           if (key === variable) {
             rule.params = queries[key];
 
-            // gather meida queries inners
-            rule.walkRules(innerRules => {
+            // gather media queries inners
+            root.walkRules(innerRules => {
               let stringSelector = `  ${innerRules.selector} {\n`;
               innerRules.walkDecls(innerDecl => {
                   stringSelector += `    ${innerDecl.prop}: ${innerDecl.value};\n`;