diff --git a/internal/plugin/convert/schema.go b/internal/plugin/convert/schema.go
index 41e48ba618..05db62bcbf 100644
--- a/internal/plugin/convert/schema.go
+++ b/internal/plugin/convert/schema.go
@@ -118,6 +118,7 @@ func ProtoToConfigSchema(b *proto.Schema_Block) *configschema.Block {
 			Computed:        a.Computed,
 			Sensitive:       a.Sensitive,
 			Deprecated:      a.Deprecated,
+			WriteOnly:       a.WriteOnly,
 		}
 
 		if err := json.Unmarshal(a.Type, &attr.Type); err != nil {
diff --git a/internal/plugin6/convert/schema.go b/internal/plugin6/convert/schema.go
index 39c1ff6204..6d10ed8f42 100644
--- a/internal/plugin6/convert/schema.go
+++ b/internal/plugin6/convert/schema.go
@@ -124,6 +124,7 @@ func ProtoToConfigSchema(b *proto.Schema_Block) *configschema.Block {
 			Computed:        a.Computed,
 			Sensitive:       a.Sensitive,
 			Deprecated:      a.Deprecated,
+			WriteOnly:       a.WriteOnly,
 		}
 
 		if a.Type != nil {