diff --git a/src/runtime/sourceMaps.js b/src/runtime/sourceMaps.js
index 5279eadb0..14b4f16e3 100644
--- a/src/runtime/sourceMaps.js
+++ b/src/runtime/sourceMaps.js
@@ -13,11 +13,7 @@ module.exports = (item) => {
     const data = `sourceMappingURL=data:application/json;charset=utf-8;base64,${base64}`;
     const sourceMapping = `/*# ${data} */`;
 
-    const sourceURLs = cssMapping.sources.map(
-      (source) => `/*# sourceURL=${cssMapping.sourceRoot || ""}${source} */`
-    );
-
-    return [content].concat(sourceURLs).concat([sourceMapping]).join("\n");
+    return [content].concat([sourceMapping]).join("\n");
   }
 
   return [content].join("\n");
diff --git a/test/__snapshots__/exportType.test.js.snap b/test/__snapshots__/exportType.test.js.snap
index 22f0a03b4..42ab05bc4 100644
--- a/test/__snapshots__/exportType.test.js.snap
+++ b/test/__snapshots__/exportType.test.js.snap
@@ -1464,7 +1464,6 @@ a[href=\\"\\" i] {
   color: blue;
 }
 
-/*# sourceURL=webpack://./basic-css-style-sheet.css */
 /*# sourceMappingURL=data:application/json;charset=utf-8;base64,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 */",
 }
 `;
@@ -2644,7 +2643,6 @@ a[href=\\"\\" i] {
   color: blue;
 }
 
-/*# sourceURL=webpack://./basic-css-style-sheet.css */
 /*# sourceMappingURL=data:application/json;charset=utf-8;base64,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 */"
 `;
 
diff --git a/test/__snapshots__/sourceMap-option.test.js.snap b/test/__snapshots__/sourceMap-option.test.js.snap
index bbb0dfd54..670f3bb14 100644
--- a/test/__snapshots__/sourceMap-option.test.js.snap
+++ b/test/__snapshots__/sourceMap-option.test.js.snap
@@ -1,76 +1,5 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`"sourceMap" option should generate source maps and do not change "[contenthash]" on different platform: errors 1`] = `Array []`;
-
-exports[`"sourceMap" option should generate source maps and do not change "[contenthash]" on different platform: module 1`] = `
-"// Imports
-import ___CSS_LOADER_API_SOURCEMAP_IMPORT___ from \\"../../../src/runtime/sourceMaps.js\\";
-import ___CSS_LOADER_API_IMPORT___ from \\"../../../src/runtime/api.js\\";
-import ___CSS_LOADER_AT_RULE_IMPORT_0___ from \\"-!../../../src/index.js??ruleSet[1].rules[0].rules[0]!./nested/nested.css\\";
-var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(___CSS_LOADER_API_SOURCEMAP_IMPORT___);
-___CSS_LOADER_EXPORT___.i(___CSS_LOADER_AT_RULE_IMPORT_0___);
-// Module
-___CSS_LOADER_EXPORT___.push([module.id, \\".class {\\\\n  color: red;\\\\n}\\\\n\\", \\"\\",{\\"version\\":3,\\"sources\\":[\\"webpack://./test/fixtures/source-map/basic.css\\"],\\"names\\":[],\\"mappings\\":\\"AAEA;EACE,UAAU;AACZ\\",\\"sourcesContent\\":[\\"@import \\\\\\"./nested/nested.css\\\\\\";\\\\n\\\\n.class {\\\\n  color: red;\\\\n}\\\\n\\"],\\"sourceRoot\\":\\"\\"}]);
-// Exports
-export default ___CSS_LOADER_EXPORT___;
-"
-`;
-
-exports[`"sourceMap" option should generate source maps and do not change "[contenthash]" on different platform: result 1`] = `
-Array [
-  Array [
-    "./src/index.js??ruleSet[1].rules[0].rules[0]!./test/fixtures/source-map/nested/nested.css",
-    ".nested {
-  color: blue;
-}
-",
-    "",
-    Object {
-      "mappings": "AAAA;EACE,WAAW;AACb",
-      "names": Array [],
-      "sourceRoot": "",
-      "sources": Array [
-        "webpack://./test/fixtures/source-map/nested/nested.css",
-      ],
-      "sourcesContent": Array [
-        ".nested {
-  color: blue;
-}
-",
-      ],
-      "version": 3,
-    },
-  ],
-  Array [
-    "./test/fixtures/source-map/basic.css",
-    ".class {
-  color: red;
-}
-",
-    "",
-    Object {
-      "mappings": "AAEA;EACE,UAAU;AACZ",
-      "names": Array [],
-      "sourceRoot": "",
-      "sources": Array [
-        "webpack://./test/fixtures/source-map/basic.css",
-      ],
-      "sourcesContent": Array [
-        "@import \\"./nested/nested.css\\";
-
-.class {
-  color: red;
-}
-",
-      ],
-      "version": 3,
-    },
-  ],
-]
-`;
-
-exports[`"sourceMap" option should generate source maps and do not change "[contenthash]" on different platform: warnings 1`] = `Array []`;
-
 exports[`"sourceMap" option should generate source maps and respect 'nosources' value: errors 1`] = `Array []`;
 
 exports[`"sourceMap" option should generate source maps and respect 'nosources' value: module 1`] = `
diff --git a/test/runtime/__snapshots__/api.test.js.snap b/test/runtime/__snapshots__/api.test.js.snap
index ac100b914..447a788b1 100644
--- a/test/runtime/__snapshots__/api.test.js.snap
+++ b/test/runtime/__snapshots__/api.test.js.snap
@@ -14,7 +14,6 @@ exports[`api should toString multiple modules 1`] = `"body { b: 2; }body { a: 1;
 
 exports[`api should toString with a source map without "sourceRoot" 1`] = `
 "body { a: 1; }
-/*# sourceURL=./path/to/test.scss */
 /*# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJmaWxlIjoidGVzdC5zY3NzIiwic291cmNlcyI6WyIuL3BhdGgvdG8vdGVzdC5zY3NzIl0sIm1hcHBpbmdzIjoiQUFBQTsifQ== */"
 `;
 
@@ -28,7 +27,6 @@ exports[`api should toString with media query list, layer and supports 1`] = `"b
 
 exports[`api should toString with source mapping 1`] = `
 "body { a: 1; }
-/*# sourceURL=webpack://./path/to/test.scss */
 /*# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJmaWxlIjoidGVzdC5zY3NzIiwic291cmNlcyI6WyIuL3BhdGgvdG8vdGVzdC5zY3NzIl0sIm1hcHBpbmdzIjoiQUFBQTsiLCJzb3VyY2VSb290Ijoid2VicGFjazovLyJ9 */"
 `;
 
diff --git a/test/sourceMap-option.test.js b/test/sourceMap-option.test.js
index 8776db07d..9e4413505 100644
--- a/test/sourceMap-option.test.js
+++ b/test/sourceMap-option.test.js
@@ -515,7 +515,7 @@ describe('"sourceMap" option', () => {
       /\.js$/.test(assetName)
     );
 
-    expect(chunkName).toBe("main.25338c5bc4249008fa47.bundle.js");
+    expect(chunkName).toBe("main.65372f79a7419044d515.bundle.js");
     expect(
       getModuleSource("fixtures/source-map/basic.css", stats)
     ).toMatchSnapshot("module");