diff --git a/unifi/sysinfo.go b/unifi/sysinfo.go
new file mode 100644
index 0000000..2ce05c1
--- /dev/null
+++ b/unifi/sysinfo.go
@@ -0,0 +1,85 @@
+package unifi
+
+import (
+	"context"
+	"fmt"
+)
+
+type sysInfo struct {
+	Timezone        string `json:"timezone"`
+	Version         string `json:"version"`
+	PreviousVersion string `json:"previous_version"`
+	UBNTDeviceType  string `json:"ubnt_device_type"`
+	UDMVersion      string `json:"udm_version"`
+
+	/*
+
+	   {
+	       "meta": {
+	           "rc": "ok"
+	       },
+	       "data": [
+	           {
+	               "timezone": "America/New_York",
+	               "autobackup": false,
+	               "build": "atag_6.0.43_14348",
+	               "version": "6.0.43",
+	               "previous_version": "5.12.60",
+	               "debug_mgmt": "warn",
+	               "debug_system": "warn",
+	               "debug_device": "warn",
+	               "debug_sdn": "warn",
+	               "data_retention_days": 90,
+	               "data_retention_time_in_hours_for_5minutes_scale": 24,
+	               "data_retention_time_in_hours_for_hourly_scale": 720,
+	               "data_retention_time_in_hours_for_daily_scale": 2160,
+	               "data_retention_time_in_hours_for_monthly_scale": 8760,
+	               "data_retention_time_in_hours_for_others": 2160,
+	               "update_available": false,
+	               "update_downloaded": false,
+	               "live_chat": "super-only",
+	               "store_enabled": "super-only",
+	               "hostname": "example-domain.ui.com",
+	               "name": "Dream Machine",
+	               "ip_addrs": [
+	                   "1.2.3.4"
+	               ],
+	               "inform_port": 8080,
+	               "https_port": 8443,
+	               "override_inform_host": false,
+	               "image_maps_use_google_engine": false,
+	               "radius_disconnect_running": false,
+	               "facebook_wifi_registered": false,
+	               "sso_app_id": "",
+	               "sso_app_sec": "",
+	               "uptime": 2541796,
+	               "anonymous_controller_id": "",
+	               "ubnt_device_type": "UDMB",
+	               "udm_version": "1.8.6.2969",
+	               "unsupported_device_count": 0,
+	               "unsupported_device_list": [],
+	               "unifi_go_enabled": false
+	           }
+	       ]
+	   }
+
+	*/
+}
+
+func (c *Client) sysinfo(ctx context.Context, id string) (*sysInfo, error) {
+	var respBody struct {
+		Meta meta      `json:"meta"`
+		Data []sysInfo `json:"data"`
+	}
+
+	err := c.do(ctx, "GET", fmt.Sprintf("s/%s/stat/sysinfo", id), nil, &respBody)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(respBody.Data) != 1 {
+		return nil, &NotFoundError{}
+	}
+
+	return &respBody.Data[0], nil
+}
diff --git a/unifi/unifi.go b/unifi/unifi.go
index 9eb9d08..429aee6 100644
--- a/unifi/unifi.go
+++ b/unifi/unifi.go
@@ -168,7 +168,24 @@ func (c *Client) Login(ctx context.Context, user, pass string) error {
 	if err != nil {
 		return err
 	}
-	c.version = status.Meta.ServerVersion
+
+	if version := status.Meta.ServerVersion; version != "" {
+		c.version = status.Meta.ServerVersion
+		return nil
+	}
+
+	// newer version of 6.0 controller, use sysinfo to determine version
+	// using default site since it must exist
+	si, err := c.sysinfo(ctx, "default")
+	if err != nil {
+		return err
+	}
+
+	c.version = si.Version
+
+	if c.version == "" {
+		return fmt.Errorf("unable to determine controller version")
+	}
 
 	return nil
 }
@@ -227,7 +244,6 @@ func (c *Client) do(ctx context.Context, method, relativeURL string, reqBody int
 	}
 
 	if resp.StatusCode != 200 {
-		fmt.Printf("Request Body:\n%s\n", string(reqBytes))
 		errBody := struct {
 			Meta meta `json:"meta"`
 		}{}