diff --git a/builtin/providers/terraform/provider.go b/builtin/providers/terraform/provider.go
index 405f3f248..baee8140d 100644
--- a/builtin/providers/terraform/provider.go
+++ b/builtin/providers/terraform/provider.go
@@ -122,3 +122,8 @@ func (p *Provider) ValidateResourceTypeConfig(providers.ValidateResourceTypeConf
 	var res providers.ValidateResourceTypeConfigResponse
 	return res
 }
+
+// Close is a noop for this provider, since it's run in-process.
+func (p *Provider) Close() error {
+	return nil
+}