diff --git a/modules/interconnect_attachment/README.md b/modules/interconnect_attachment/README.md
index db2f92d..9c97aac 100644
--- a/modules/interconnect_attachment/README.md
+++ b/modules/interconnect_attachment/README.md
@@ -17,7 +17,7 @@
 | ipsec\_internal\_addresses | URL of addresses that have been reserved for the interconnect attachment, Used only for interconnect attachment that has the encryption option as IPSEC. | `list(string)` | `[]` | no |
 | mtu | Maximum Transmission Unit (MTU), in bytes, of packets passing through this interconnect attachment. Currently, only 1440 and 1500 are allowed. If not specified, the value will default to 1440. | `string` | `null` | no |
 | name | The name of the interconnect attachment | `string` | n/a | yes |
-| peer | BGP Peer for this attachment. | <pre>object({<br>    name                      = string<br>    peer_asn                  = string<br>    advertised_route_priority = optional(number)<br>    bfd = optional(object({<br>      session_initialization_mode = string<br>      min_transmit_interval       = optional(number)<br>      min_receive_interval        = optional(number)<br>      multiplier                  = optional(number)<br>    }))<br>    md5_authentication_key = optional(object({<br>      name = string<br>      key  = string<br>    }))<br>  })</pre> | `null` | no |
+| peer | BGP Peer for this attachment. | <pre>object({<br>    name                           = string<br>    peer_asn                       = string<br>    advertised_route_priority      = optional(number)<br>    zero_advertised_route_priority = optional(bool)<br>    bfd = optional(object({<br>      session_initialization_mode = string<br>      min_transmit_interval       = optional(number)<br>      min_receive_interval        = optional(number)<br>      multiplier                  = optional(number)<br>    }))<br>    md5_authentication_key = optional(object({<br>      name = string<br>      key  = string<br>    }))<br>  })</pre> | `null` | no |
 | project | The project ID to deploy to | `string` | n/a | yes |
 | region | Region where the attachment resides | `string` | n/a | yes |
 | router | Name of the router the attachment resides | `string` | n/a | yes |
diff --git a/modules/interconnect_attachment/main.tf b/modules/interconnect_attachment/main.tf
index 77fe6f9..1c151f4 100644
--- a/modules/interconnect_attachment/main.tf
+++ b/modules/interconnect_attachment/main.tf
@@ -46,11 +46,12 @@ module "interface" {
     name = try(var.peer.name, null)
 
     # Peer IP Address must not contain the subnet mask, else will throw an invalid IP address error.
-    peer_ip_address           = element(split("/", google_compute_interconnect_attachment.attachment.customer_router_ip_address), 0)
-    peer_asn                  = try(var.peer.peer_asn, null)
-    advertised_route_priority = try(var.peer.advertised_route_priority, null)
-    bfd                       = try(var.peer.bfd, null)
-    md5_authentication_key    = try(var.peer.md5_authentication_key, null)
+    peer_ip_address                = element(split("/", google_compute_interconnect_attachment.attachment.customer_router_ip_address), 0)
+    peer_asn                       = try(var.peer.peer_asn, null)
+    advertised_route_priority      = try(var.peer.advertised_route_priority, null)
+    zero_advertised_route_priority = try(var.peer.zero_advertised_route_priority, false)
+    bfd                            = try(var.peer.bfd, null)
+    md5_authentication_key         = try(var.peer.md5_authentication_key, null)
   }]
 }
 
diff --git a/modules/interconnect_attachment/metadata.yaml b/modules/interconnect_attachment/metadata.yaml
index 2086397..4cc5f63 100644
--- a/modules/interconnect_attachment/metadata.yaml
+++ b/modules/interconnect_attachment/metadata.yaml
@@ -109,9 +109,10 @@ spec:
         description: BGP Peer for this attachment.
         varType: |-
           object({
-              name                      = string
-              peer_asn                  = string
-              advertised_route_priority = optional(number)
+              name                           = string
+              peer_asn                       = string
+              advertised_route_priority      = optional(number)
+              zero_advertised_route_priority = optional(bool)
               bfd = optional(object({
                 session_initialization_mode = string
                 min_transmit_interval       = optional(number)
diff --git a/modules/interconnect_attachment/variables.tf b/modules/interconnect_attachment/variables.tf
index 269e224..d737809 100644
--- a/modules/interconnect_attachment/variables.tf
+++ b/modules/interconnect_attachment/variables.tf
@@ -117,9 +117,10 @@ variable "interface" {
 variable "peer" {
   description = "BGP Peer for this attachment."
   type = object({
-    name                      = string
-    peer_asn                  = string
-    advertised_route_priority = optional(number)
+    name                           = string
+    peer_asn                       = string
+    advertised_route_priority      = optional(number)
+    zero_advertised_route_priority = optional(bool)
     bfd = optional(object({
       session_initialization_mode = string
       min_transmit_interval       = optional(number)