diff --git a/builtin/providers/openstack/resource_openstack_networking_subnet_v2.go b/builtin/providers/openstack/resource_openstack_networking_subnet_v2.go
index e0b2fcab9..be19338aa 100644
--- a/builtin/providers/openstack/resource_openstack_networking_subnet_v2.go
+++ b/builtin/providers/openstack/resource_openstack_networking_subnet_v2.go
@@ -58,7 +58,6 @@ func resourceNetworkingSubnetV2() *schema.Resource {
 			"allocation_pools": &schema.Schema{
 				Type:     schema.TypeList,
 				Optional: true,
-				ForceNew: true,
 				Computed: true,
 				Elem: &schema.Resource{
 					Schema: map[string]*schema.Schema{
@@ -293,6 +292,10 @@ func resourceNetworkingSubnetV2Update(d *schema.ResourceData, meta interface{})
 		updateOpts.EnableDHCP = &v
 	}
 
+	if d.HasChange("allocation_pools") {
+		updateOpts.AllocationPools = resourceSubnetAllocationPoolsV2(d)
+	}
+
 	log.Printf("[DEBUG] Updating Subnet %s with options: %+v", d.Id(), updateOpts)
 
 	_, err = subnets.Update(networkingClient, d.Id(), updateOpts).Extract()
diff --git a/builtin/providers/openstack/resource_openstack_networking_subnet_v2_test.go b/builtin/providers/openstack/resource_openstack_networking_subnet_v2_test.go
index 1c9d645c1..fe0a6b08a 100644
--- a/builtin/providers/openstack/resource_openstack_networking_subnet_v2_test.go
+++ b/builtin/providers/openstack/resource_openstack_networking_subnet_v2_test.go
@@ -22,6 +22,8 @@ func TestAccNetworkingV2Subnet_basic(t *testing.T) {
 				Config: testAccNetworkingV2Subnet_basic,
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckNetworkingV2SubnetExists("openstack_networking_subnet_v2.subnet_1", &subnet),
+					resource.TestCheckResourceAttr(
+						"openstack_networking_subnet_v2.subnet_1", "allocation_pools.0.start", "192.168.199.100"),
 				),
 			},
 			resource.TestStep{
@@ -33,6 +35,8 @@ func TestAccNetworkingV2Subnet_basic(t *testing.T) {
 						"openstack_networking_subnet_v2.subnet_1", "gateway_ip", "192.168.199.1"),
 					resource.TestCheckResourceAttr(
 						"openstack_networking_subnet_v2.subnet_1", "enable_dhcp", "true"),
+					resource.TestCheckResourceAttr(
+						"openstack_networking_subnet_v2.subnet_1", "allocation_pools.0.start", "192.168.199.150"),
 				),
 			},
 		},
@@ -220,7 +224,7 @@ resource "openstack_networking_subnet_v2" "subnet_1" {
   network_id = "${openstack_networking_network_v2.network_1.id}"
 
   allocation_pools {
-    start = "192.168.199.100"
+    start = "192.168.199.150"
     end = "192.168.199.200"
   }
 }
diff --git a/vendor/github.com/gophercloud/gophercloud/openstack/networking/v2/subnets/requests.go b/vendor/github.com/gophercloud/gophercloud/openstack/networking/v2/subnets/requests.go
index 896f13ed5..ec3769554 100644
--- a/vendor/github.com/gophercloud/gophercloud/openstack/networking/v2/subnets/requests.go
+++ b/vendor/github.com/gophercloud/gophercloud/openstack/networking/v2/subnets/requests.go
@@ -120,11 +120,12 @@ type UpdateOptsBuilder interface {
 
 // UpdateOpts represents the attributes used when updating an existing subnet.
 type UpdateOpts struct {
-	Name           string      `json:"name,omitempty"`
-	GatewayIP      *string     `json:"gateway_ip,omitempty"`
-	DNSNameservers []string    `json:"dns_nameservers,omitempty"`
-	HostRoutes     []HostRoute `json:"host_routes,omitempty"`
-	EnableDHCP     *bool       `json:"enable_dhcp,omitempty"`
+	Name            string           `json:"name,omitempty"`
+	AllocationPools []AllocationPool `json:"allocation_pools,omitempty"`
+	GatewayIP       *string          `json:"gateway_ip,omitempty"`
+	DNSNameservers  []string         `json:"dns_nameservers,omitempty"`
+	HostRoutes      []HostRoute      `json:"host_routes,omitempty"`
+	EnableDHCP      *bool            `json:"enable_dhcp,omitempty"`
 }
 
 // ToSubnetUpdateMap casts an UpdateOpts struct to a map.
diff --git a/vendor/vendor.json b/vendor/vendor.json
index 529d3491c..a348d09cb 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -1853,10 +1853,10 @@
 			"revisionTime": "2017-03-10T01:59:53Z"
 		},
 		{
-			"checksumSHA1": "wY0MY7RpX0Z2Y0rMmrAuYS6cHYA=",
+			"checksumSHA1": "mNRf4F3OjUIivhWTPZD/FjJNuCk=",
 			"path": "github.com/gophercloud/gophercloud/openstack/networking/v2/subnets",
-			"revision": "0f64da0e36de86a0ca1a8f2fc1b0570a0d3f7504",
-			"revisionTime": "2017-03-10T01:59:53Z"
+			"revision": "4f943e86d0a2c2e1c5c040e00a1358079c0881a1",
+			"revisionTime": "2017-05-24T02:11:01Z"
 		},
 		{
 			"checksumSHA1": "LtdQKIKKRKe6FOGdBvrBz/bg1Gc=",