diff --git a/rackspace/lb/lb/fixtures.go b/rackspace/lb/lb/fixtures.go
index 19a605d..d27aae2 100644
--- a/rackspace/lb/lb/fixtures.go
+++ b/rackspace/lb/lb/fixtures.go
@@ -233,3 +233,26 @@
 	`)
 	})
 }
+
+func mockUpdateLBResponse(t *testing.T, id int) {
+	th.Mux.HandleFunc("/loadbalancers/"+strconv.Itoa(id), func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "PUT")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+
+		th.TestJSONRequest(t, r, `
+{
+	"loadBalancer": {
+		"name": "a-new-loadbalancer",
+		"protocol": "TCP",
+		"halfClosed": true,
+		"algorithm": "RANDOM",
+		"port": 8080,
+		"timeout": 100,
+		"httpsRedirect": false
+	}
+}
+		`)
+
+		w.WriteHeader(http.StatusOK)
+	})
+}
diff --git a/rackspace/lb/lb/requests.go b/rackspace/lb/lb/requests.go
index 81a8642..158c9be 100644
--- a/rackspace/lb/lb/requests.go
+++ b/rackspace/lb/lb/requests.go
@@ -270,3 +270,70 @@
 
 	return res
 }
+
+type UpdateOptsBuilder interface {
+	ToLBUpdateMap() (map[string]interface{}, error)
+}
+
+type UpdateOpts struct {
+	Name string
+
+	Protocol Protocol
+
+	HalfClosed enabledState
+
+	Algorithm Algorithm
+
+	Port int
+
+	Timeout int
+
+	HTTPSRedirect enabledState
+}
+
+// ToLBUpdateMap casts a CreateOpts struct to a map.
+func (opts UpdateOpts) ToLBUpdateMap() (map[string]interface{}, error) {
+	lb := make(map[string]interface{})
+
+	if opts.Name != "" {
+		lb["name"] = opts.Name
+	}
+	if opts.Protocol != "" {
+		lb["protocol"] = opts.Protocol
+	}
+	if opts.HalfClosed != nil {
+		lb["halfClosed"] = opts.HalfClosed
+	}
+	if opts.Algorithm != "" {
+		lb["algorithm"] = opts.Algorithm
+	}
+	if opts.Port > 0 {
+		lb["port"] = opts.Port
+	}
+	if opts.Timeout > 0 {
+		lb["timeout"] = opts.Timeout
+	}
+	if opts.HTTPSRedirect != nil {
+		lb["httpsRedirect"] = &opts.HTTPSRedirect
+	}
+
+	return map[string]interface{}{"loadBalancer": lb}, nil
+}
+
+func Update(c *gophercloud.ServiceClient, id int, opts UpdateOptsBuilder) UpdateResult {
+	var res UpdateResult
+
+	reqBody, err := opts.ToLBUpdateMap()
+	if err != nil {
+		res.Err = err
+		return res
+	}
+
+	_, res.Err = perigee.Request("PUT", resourceURL(c, id), perigee.Options{
+		MoreHeaders: c.AuthenticatedHeaders(),
+		ReqBody:     &reqBody,
+		OkCodes:     []int{200},
+	})
+
+	return res
+}
diff --git a/rackspace/lb/lb/requests_test.go b/rackspace/lb/lb/requests_test.go
index 6f9417f..5c0fd57 100644
--- a/rackspace/lb/lb/requests_test.go
+++ b/rackspace/lb/lb/requests_test.go
@@ -204,3 +204,23 @@
 	th.AssertDeepEquals(t, expected, lb)
 	th.AssertNoErr(t, err)
 }
+
+func TestUpdate(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+
+	mockUpdateLBResponse(t, id1)
+
+	opts := UpdateOpts{
+		Name:          "a-new-loadbalancer",
+		Protocol:      "TCP",
+		HalfClosed:    Enabled,
+		Algorithm:     RAND,
+		Port:          8080,
+		Timeout:       100,
+		HTTPSRedirect: Disabled,
+	}
+
+	err := Update(client.ServiceClient(), id1, opts).ExtractErr()
+	th.AssertNoErr(t, err)
+}
diff --git a/rackspace/lb/lb/results.go b/rackspace/lb/lb/results.go
index d0ce197..70b0272 100644
--- a/rackspace/lb/lb/results.go
+++ b/rackspace/lb/lb/results.go
@@ -242,6 +242,10 @@
 	gophercloud.ErrResult
 }
 
+type UpdateResult struct {
+	gophercloud.ErrResult
+}
+
 type GetResult struct {
 	commonResult
 }