diff --git a/network/external.yaml b/network/external.yaml
index bf4bdfe780..e8f92a5ea6 100644
--- a/network/external.yaml
+++ b/network/external.yaml
@@ -12,7 +12,7 @@ parameters:
   ExternalNetValueSpecs:
     default: {'provider:physical_network': 'external', 'provider:network_type': 'flat'}
     description: Value specs for the external network.
-    type: string
+    type: json
   ExternalNetAdminStateUp:
     default: false
     description: This admin state of of the network.
diff --git a/network/internal_api.yaml b/network/internal_api.yaml
index c7e822e977..69154befe0 100644
--- a/network/internal_api.yaml
+++ b/network/internal_api.yaml
@@ -12,7 +12,7 @@ parameters:
   InternalApiNetValueSpecs:
     default: {'provider:physical_network': 'internal_api', 'provider:network_type': 'flat'}
     description: Value specs for the internal API network.
-    type: string
+    type: json
   InternalApiNetAdminStateUp:
     default: false
     description: This admin state of of the network.
diff --git a/network/storage.yaml b/network/storage.yaml
index d403f9e5ce..60b779e037 100644
--- a/network/storage.yaml
+++ b/network/storage.yaml
@@ -12,7 +12,7 @@ parameters:
   StorageNetValueSpecs:
     default: {'provider:physical_network': 'storage', 'provider:network_type': 'flat'}
     description: Value specs for the storage network.
-    type: string
+    type: json
   StorageNetAdminStateUp:
     default: false
     description: This admin state of of the network.
diff --git a/network/storage_mgmt.yaml b/network/storage_mgmt.yaml
index d0c919b58b..043bc87bd6 100644
--- a/network/storage_mgmt.yaml
+++ b/network/storage_mgmt.yaml
@@ -12,7 +12,7 @@ parameters:
   StorageMgmtNetValueSpecs:
     default: {'provider:physical_network': 'storage_mgmt', 'provider:network_type': 'flat'}
     description: Value specs for the storage_mgmt network.
-    type: string
+    type: json
   StorageMgmtNetAdminStateUp:
     default: false
     description: This admin state of of the network.
diff --git a/network/tenant.yaml b/network/tenant.yaml
index 055b87b8ba..daf5cb75a4 100644
--- a/network/tenant.yaml
+++ b/network/tenant.yaml
@@ -12,7 +12,7 @@ parameters:
   TenantNetValueSpecs:
     default: {'provider:physical_network': 'tenant', 'provider:network_type': 'flat'}
     description: Value specs for the tenant network.
-    type: string
+    type: json
   TenantNetAdminStateUp:
     default: false
     description: This admin state of of the network.