diff --git a/fixtures/css/sass_package_import.scss b/fixtures/css/sass_package_import.scss
new file mode 100644
index 00000000..905a0773
--- /dev/null
+++ b/fixtures/css/sass_package_import.scss
@@ -0,0 +1,7 @@
+// There seems to be an issue with the sass-loader and prefixing
+// aliased directories with a tilde. The following line is how
+// this import should look and works for node_modules.
+// @import '~lib/test-pkg';
+
+// Importing without the tilde seems to work for webpack aliases
+@import 'lib/test-pkg';
\ No newline at end of file
diff --git a/fixtures/css/style_package_import.css b/fixtures/css/style_package_import.css
new file mode 100644
index 00000000..54d00e13
--- /dev/null
+++ b/fixtures/css/style_package_import.css
@@ -0,0 +1 @@
+@import '~lib/test-pkg';
\ No newline at end of file
diff --git a/fixtures/lib/test-pkg/css/sass_entry.scss b/fixtures/lib/test-pkg/css/sass_entry.scss
new file mode 100644
index 00000000..a568ef29
--- /dev/null
+++ b/fixtures/lib/test-pkg/css/sass_entry.scss
@@ -0,0 +1,5 @@
+$content:'Sass entrypoint';
+
+body {
+    content:$content;
+}
\ No newline at end of file
diff --git a/fixtures/lib/test-pkg/css/style_entry.css b/fixtures/lib/test-pkg/css/style_entry.css
new file mode 100644
index 00000000..584ed60d
--- /dev/null
+++ b/fixtures/lib/test-pkg/css/style_entry.css
@@ -0,0 +1,3 @@
+body {
+    content:'Style entrypoint';
+}
\ No newline at end of file
diff --git a/fixtures/lib/test-pkg/js/javascript_entry.js b/fixtures/lib/test-pkg/js/javascript_entry.js
new file mode 100644
index 00000000..3a4505d8
--- /dev/null
+++ b/fixtures/lib/test-pkg/js/javascript_entry.js
@@ -0,0 +1,3 @@
+"use strict";
+
+document.write("JavaScript entrypoint");
\ No newline at end of file
diff --git a/fixtures/lib/test-pkg/package.json b/fixtures/lib/test-pkg/package.json
new file mode 100644
index 00000000..50fc4cda
--- /dev/null
+++ b/fixtures/lib/test-pkg/package.json
@@ -0,0 +1,11 @@
+{
+    "name":"@symfony/webpack-encore-test-pkg",
+    "description": "This is a test package for use by functional tests which use packages.",
+    "author": {
+        "name": "David Ellingsworth",
+        "email": "david@desource.org"
+    },
+    "main":"js/javascript_entry.js",
+    "style":"css/style_entry.css",
+    "sass":"css/sass_entry.scss"
+}
\ No newline at end of file
diff --git a/lib/config-generator.js b/lib/config-generator.js
index 443e7242..64ec9127 100644
--- a/lib/config-generator.js
+++ b/lib/config-generator.js
@@ -234,6 +234,10 @@ class ConfigGenerator {
                 use: babelLoaderUtil.getLoaders(this.webpackConfig)
             }),
             applyRuleConfigurationCallback('css', {
+                resolve: {
+                    mainFields: ['style', 'main'],
+                    extensions: ['.css'],
+                },
                 test: /\.css$/,
                 oneOf: [
                     {
@@ -311,6 +315,10 @@ class ConfigGenerator {
 
         if (this.webpackConfig.useSassLoader) {
             rules.push(applyRuleConfigurationCallback('sass', {
+                resolve: {
+                    mainFields: ['sass', 'style', 'main'],
+                    extensions: ['.scss', '.sass', '.css']
+                },
                 test: /\.s[ac]ss$/,
                 oneOf: [
                     {
diff --git a/test/functional.js b/test/functional.js
index 2e4a46d5..e7833ad0 100644
--- a/test/functional.js
+++ b/test/functional.js
@@ -2214,6 +2214,43 @@ module.exports = {
             });
         });
 
+        describe('Package entrypoint imports', () => {
+            it('Import via "sass" package property', (done) => {
+                const config = createWebpackConfig('web/build', 'dev');
+
+                config.setPublicPath('/build');
+                config.addAliases({
+                    lib: path.resolve('./lib')
+                });
+                config.enableSassLoader();
+                config.addStyleEntry('sass', './css/sass_package_import.scss');
+
+                testSetup.runWebpack(config, () => {
+                    // A successful compile is all that is needed to pass this test.
+                    // If this test fails then the import in the above sass file
+                    // is not loading the package's sass file.
+                    done();
+                });
+            });
+
+            it('Import via "style" package property', (done) => {
+                const config = createWebpackConfig('web/build', 'dev');
+
+                config.setPublicPath('/build');
+                config.addAliases({
+                    lib: path.resolve('./lib')
+                });
+                config.addStyleEntry('style', './css/style_package_import.css');
+
+                testSetup.runWebpack(config, () => {
+                    // A successful compile is all that is needed to pass this test.
+                    // If this test fails then the import in the above css file
+                    // is not loading the package's style file.
+                    done();
+                });
+            });
+        });
+
         describe('CSS extraction', () => {
             it('With CSS extraction enabled', (done) => {
                 const config = createWebpackConfig('build', 'dev');