diff --git a/geofield.module b/geofield.module
index 2246242..e02c002 100644
--- a/geofield.module
+++ b/geofield.module
@@ -7,6 +7,12 @@
 
 use Drupal\Core\Database\Database;
 
+// Ludwig integration for 'classmap' type phayes/geophp library.
+if (\Drupal::hasService('ludwig.require_once')) {
+  $ludwig_require_once = \Drupal::service('ludwig.require_once');
+  $ludwig_require_once->ludwigRequireOnce('phayes/geophp', 'geoPHP.inc');
+}
+
 /**
  * Point feature constant.
  *
diff --git a/ludwig.json b/ludwig.json
new file mode 100644
index 0000000..7727c10
--- /dev/null
+++ b/ludwig.json
@@ -0,0 +1,9 @@
+{
+  "require": {
+    "phayes/geophp": {
+      "version": "v1.2",
+      "url": "https://github.com/phayes/geoPHP/archive/1.2.zip",
+      "disable_warnings": "TRUE"
+    }
+  }
+}