diff --git a/modules/pubsub/iam.tf b/modules/pubsub/iam.tf
index 8997c0f0c..c92b1f485 100644
--- a/modules/pubsub/iam.tf
+++ b/modules/pubsub/iam.tf
@@ -65,7 +65,7 @@ locals {
 resource "google_pubsub_topic_iam_binding" "authoritative" {
   for_each = local.iam
   project  = local.project_id
-  topic    = google_pubsub_topic.default.name
+  topic    = google_pubsub_topic.default.id
   role     = lookup(local.ctx.custom_roles, each.key, each.key)
   members = [
     for v in each.value : lookup(local.ctx.iam_principals, v, v)
@@ -74,7 +74,7 @@ resource "google_pubsub_topic_iam_binding" "authoritative" {
 
 resource "google_pubsub_topic_iam_binding" "bindings" {
   for_each = var.iam_bindings
-  topic    = google_pubsub_topic.default.name
+  topic    = google_pubsub_topic.default.id
   role     = lookup(local.ctx.custom_roles, each.value.role, each.value.role)
   members = [
     for v in each.value.members : lookup(local.ctx.iam_principals, v, v)
@@ -91,7 +91,7 @@ resource "google_pubsub_topic_iam_binding" "bindings" {
 
 resource "google_pubsub_topic_iam_member" "bindings" {
   for_each = var.iam_bindings_additive
-  topic    = google_pubsub_topic.default.name
+  topic    = google_pubsub_topic.default.id
   role     = lookup(local.ctx.custom_roles, each.value.role, each.value.role)
   member = lookup(
     local.ctx.iam_principals, each.value.member, each.value.member
@@ -112,7 +112,7 @@ resource "google_pubsub_subscription_iam_binding" "authoritative" {
     "${binding.subscription}.${binding.role}" => binding
   }
   project      = local.project_id
-  subscription = google_pubsub_subscription.default[each.value.subscription].name
+  subscription = google_pubsub_subscription.default[each.value.subscription].id
   role         = lookup(local.ctx.custom_roles, each.value.role, each.value.role)
   members = [
     for v in each.value.members : lookup(local.ctx.iam_principals, v, v)
@@ -122,7 +122,7 @@ resource "google_pubsub_subscription_iam_binding" "authoritative" {
 resource "google_pubsub_subscription_iam_binding" "bindings" {
   for_each     = local.subscription_iam_bindings
   project      = local.project_id
-  subscription = google_pubsub_subscription.default[each.value.subscription].name
+  subscription = google_pubsub_subscription.default[each.value.subscription].id
   role         = lookup(local.ctx.custom_roles, each.value.role, each.value.role)
   members = [
     for v in each.value.members : lookup(local.ctx.iam_principals, v, v)
@@ -140,7 +140,7 @@ resource "google_pubsub_subscription_iam_binding" "bindings" {
 resource "google_pubsub_subscription_iam_member" "members" {
   for_each     = local.subscription_iam_bindings_additive
   project      = local.project_id
-  subscription = google_pubsub_subscription.default[each.value.subscription].name
+  subscription = google_pubsub_subscription.default[each.value.subscription].id
   role         = lookup(local.ctx.custom_roles, each.value.role, each.value.role)
   member = lookup(
     local.ctx.iam_principals, each.value.member, each.value.member