diff --git a/src/Composer/Installer.php b/src/Composer/Installer.php
index bd0d22e3c..12f071c51 100644
--- a/src/Composer/Installer.php
+++ b/src/Composer/Installer.php
@@ -1332,8 +1332,8 @@ class Installer
                 $whitelistPatternRegexp = BasePackage::packageNameToRegexp($packageName);
                 foreach ($rootRequiredPackageNames as $rootRequiredPackageName) {
                     if (preg_match($whitelistPatternRegexp, $rootRequiredPackageName)) {
+                        $depPackages = array_merge($pool->whatProvides($rootRequiredPackageName));
                         $nameMatchesRequiredPackage = true;
-                        break;
                     }
                 }
             }
diff --git a/tests/Composer/Test/Fixtures/installer/update-whitelist-patterns-with-root-dependencies.test b/tests/Composer/Test/Fixtures/installer/update-whitelist-patterns-with-root-dependencies.test
new file mode 100644
index 000000000..360ef49f5
--- /dev/null
+++ b/tests/Composer/Test/Fixtures/installer/update-whitelist-patterns-with-root-dependencies.test
@@ -0,0 +1,45 @@
+--TEST--
+Update with a package whitelist only updates those packages and their dependencies matching the pattern
+--COMPOSER--
+{
+    "repositories": [
+        {
+            "type": "package",
+            "package": [
+                { "name": "fixed", "version": "1.1.0" },
+                { "name": "fixed", "version": "1.0.0" },
+                { "name": "whitelisted-component1", "version": "1.1.0", "require": { "whitelisted-component2": "1.1.0" } },
+                { "name": "whitelisted-component1", "version": "1.0.0", "require": { "whitelisted-component2": "1.0.0" } },
+                { "name": "whitelisted-component2", "version": "1.1.0", "require": { "dependency": "1.1.0" } },
+                { "name": "whitelisted-component2", "version": "1.0.0", "require": { "dependency": "1.0.0" } },
+                { "name": "dependency", "version": "1.1.0" },
+                { "name": "dependency", "version": "1.0.0" },
+                { "name": "unrelated", "version": "1.1.0", "require": { "unrelated-dependency": "1.*" }  },
+                { "name": "unrelated", "version": "1.0.0", "require": { "unrelated-dependency": "1.*" }  },
+                { "name": "unrelated-dependency", "version": "1.1.0" },
+                { "name": "unrelated-dependency", "version": "1.0.0" }
+            ]
+        }
+    ],
+    "require": {
+        "fixed": "1.*",
+        "whitelisted-component1": "1.*",
+        "whitelisted-component2": "1.*",
+        "unrelated": "1.*"
+    }
+}
+--INSTALLED--
+[
+    { "name": "fixed", "version": "1.0.0" },
+    { "name": "whitelisted-component1", "version": "1.0.0", "require": { "whitelisted-component2": "1.0.0" } },
+    { "name": "whitelisted-component2", "version": "1.0.0", "require": { "dependency": "1.0.0" } },
+    { "name": "dependency", "version": "1.0.0" },
+    { "name": "unrelated", "version": "1.0.0", "require": { "unrelated-dependency": "1.*" } },
+    { "name": "unrelated-dependency", "version": "1.0.0" }
+]
+--RUN--
+update whitelisted-* --with-dependencies
+--EXPECT--
+Updating dependency (1.0.0) to dependency (1.1.0)
+Updating whitelisted-component2 (1.0.0) to whitelisted-component2 (1.1.0)
+Updating whitelisted-component1 (1.0.0) to whitelisted-component1 (1.1.0)