Enable new dependencies via update.php.

farm.install

@@ -51,3 +51,20 @@ function farm_update_7000(&$sandbox) {
   }
 }
 
+/**
+ * Update to Openlayers 3
+ */
+function farm_update_7001(&$sandbox) {
+
+  // Enable new module dependencies.
+  $modules = array(
+    'openlayers_geofield',
+    'views_geojson',
+  );
+  foreach ($modules as $module) {
+    if (!module_exists($module)) {
+      module_enable($module);
+    }
+  }
+}
+