diff --git a/lib/datasource/index.js b/lib/datasource/index.js
index 828e11553e..d6dfce8c57 100644
--- a/lib/datasource/index.js
+++ b/lib/datasource/index.js
@@ -11,6 +11,8 @@ const pypi = require('./pypi');
 const terraform = require('./terraform');
 const gitlab = require('./gitlab');
 
+const { addMetaData } = require('./metadata');
+
 const datasources = {
   orb,
   docker,
@@ -24,63 +26,6 @@ const datasources = {
   gitlab,
 };
 
-// Use this object to define changelog URLs for packages
-// Only necessary when the changelog data cannot be found in the package's source repository
-const manualChangelogUrls = {
-  npm: {
-    firebase: 'https://firebase.google.com/support/release-notes/js',
-    'flow-bin': 'https://github.com/facebook/flow/blob/master/Changelog.md',
-    'react-native':
-      'https://github.com/react-native-community/react-native-releases/blob/master/CHANGELOG.md',
-  },
-  pypi: {
-    'pytest-django':
-      'https://pytest-django.readthedocs.io/en/latest/changelog.html#changelog',
-    django: 'https://github.com/django/django/tree/master/docs/releases',
-    djangorestframework:
-      'https://www.django-rest-framework.org/community/release-notes/',
-    flake8: 'http://flake8.pycqa.org/en/latest/release-notes/index.html',
-    'django-storages':
-      'https://github.com/jschneier/django-storages/blob/master/CHANGELOG.rst',
-    phonenumbers:
-      'https://github.com/daviddrysdale/python-phonenumbers/blob/dev/python/HISTORY.md',
-    'psycopg2-binary': 'http://initd.org/psycopg/articles/tag/release/',
-    'django-debug-toolbar':
-      'https://django-debug-toolbar.readthedocs.io/en/latest/changes.html',
-    'firebase-admin':
-      'https://firebase.google.com/support/release-notes/admin/python',
-    requests:
-      'http://docs.python-requests.org/en/master/community/updates/#release-and-version-history',
-  },
-};
-
-// Use this object to define manual source URLs for packages
-// Only necessary if the datasource is unable to locate the source URL itself
-const manualSourceUrls = {
-  orb: {
-    'cypress-io/cypress': 'https://github.com/cypress-io/circleci-orb',
-    'hutson/library-release-workflows':
-      'https://github.com/hyper-expanse/library-release-workflows',
-  },
-  docker: {
-    node: 'https://github.com/nodejs/node',
-  },
-  kubernetes: {
-    node: 'https://github.com/nodejs/node',
-  },
-  npm: {
-    node: 'https://github.com/nodejs/node',
-  },
-  nvm: {
-    node: 'https://github.com/nodejs/node',
-  },
-  pypi: {
-    coverage: 'https://github.com/nedbat/coveragepy/', // bitbucket entry on pypi is wrong
-    mkdocs: 'https://github.com/mkdocs/mkdocs',
-    pillow: 'https://github.com/python-pillow/Pillow',
-  },
-};
-
 async function getPkgReleases(purlStr, config) {
   const purl = parse(purlStr);
   if (!purl) {
@@ -92,28 +37,7 @@ async function getPkgReleases(purlStr, config) {
     return null;
   }
   const dep = await datasources[purl.type].getPkgReleases(purl, config);
-  if (dep) {
-    const depName = purl.fullname.toLowerCase();
-    if (
-      manualChangelogUrls[purl.type] &&
-      manualChangelogUrls[purl.type][depName]
-    ) {
-      dep.changelogUrl = manualChangelogUrls[purl.type][depName];
-    }
-    if (manualSourceUrls[purl.type] && manualSourceUrls[purl.type][depName]) {
-      dep.sourceUrl = manualSourceUrls[purl.type][depName];
-    }
-    if (
-      !dep.sourceUrl &&
-      dep.changelogUrl &&
-      dep.changelogUrl.startsWith('https://github.com/')
-    ) {
-      dep.sourceUrl = dep.changelogUrl
-        .split('/')
-        .slice(0, 5)
-        .join('/');
-    }
-  }
+  addMetaData(purl, dep);
   return dep;
 }
 
diff --git a/lib/datasource/metadata.js b/lib/datasource/metadata.js
new file mode 100644
index 0000000000..b69ce41915
--- /dev/null
+++ b/lib/datasource/metadata.js
@@ -0,0 +1,87 @@
+module.exports = {
+  addMetaData,
+};
+
+// Use this object to define changelog URLs for packages
+// Only necessary when the changelog data cannot be found in the package's source repository
+const manualChangelogUrls = {
+  npm: {
+    firebase: 'https://firebase.google.com/support/release-notes/js',
+    'flow-bin': 'https://github.com/facebook/flow/blob/master/Changelog.md',
+    'react-native':
+      'https://github.com/react-native-community/react-native-releases/blob/master/CHANGELOG.md',
+  },
+  pypi: {
+    'pytest-django':
+      'https://pytest-django.readthedocs.io/en/latest/changelog.html#changelog',
+    django: 'https://github.com/django/django/tree/master/docs/releases',
+    djangorestframework:
+      'https://www.django-rest-framework.org/community/release-notes/',
+    flake8: 'http://flake8.pycqa.org/en/latest/release-notes/index.html',
+    'django-storages':
+      'https://github.com/jschneier/django-storages/blob/master/CHANGELOG.rst',
+    phonenumbers:
+      'https://github.com/daviddrysdale/python-phonenumbers/blob/dev/python/HISTORY.md',
+    'psycopg2-binary': 'http://initd.org/psycopg/articles/tag/release/',
+    'django-debug-toolbar':
+      'https://django-debug-toolbar.readthedocs.io/en/latest/changes.html',
+    'firebase-admin':
+      'https://firebase.google.com/support/release-notes/admin/python',
+    requests:
+      'http://docs.python-requests.org/en/master/community/updates/#release-and-version-history',
+  },
+};
+
+// Use this object to define manual source URLs for packages
+// Only necessary if the datasource is unable to locate the source URL itself
+const manualSourceUrls = {
+  orb: {
+    'cypress-io/cypress': 'https://github.com/cypress-io/circleci-orb',
+    'hutson/library-release-workflows':
+      'https://github.com/hyper-expanse/library-release-workflows',
+  },
+  docker: {
+    node: 'https://github.com/nodejs/node',
+  },
+  kubernetes: {
+    node: 'https://github.com/nodejs/node',
+  },
+  npm: {
+    node: 'https://github.com/nodejs/node',
+  },
+  nvm: {
+    node: 'https://github.com/nodejs/node',
+  },
+  pypi: {
+    coverage: 'https://github.com/nedbat/coveragepy/', // bitbucket entry on pypi is wrong
+    mkdocs: 'https://github.com/mkdocs/mkdocs',
+    pillow: 'https://github.com/python-pillow/Pillow',
+  },
+};
+
+/* eslint-disable no-param-reassign */
+function addMetaData(purl, dep) {
+  if (!dep) {
+    return;
+  }
+  const depName = purl.fullname.toLowerCase();
+  if (
+    manualChangelogUrls[purl.type] &&
+    manualChangelogUrls[purl.type][depName]
+  ) {
+    dep.changelogUrl = manualChangelogUrls[purl.type][depName];
+  }
+  if (manualSourceUrls[purl.type] && manualSourceUrls[purl.type][depName]) {
+    dep.sourceUrl = manualSourceUrls[purl.type][depName];
+  }
+  if (
+    !dep.sourceUrl &&
+    dep.changelogUrl &&
+    dep.changelogUrl.startsWith('https://github.com/')
+  ) {
+    dep.sourceUrl = dep.changelogUrl
+      .split('/')
+      .slice(0, 5)
+      .join('/');
+  }
+}