--- a/node/cli/src/cli.rs
+++ b/node/cli/src/cli.rs
@@ -84,6 +84,10 @@
 	#[structopt(default_value = "500", long)]
 	pub idle_autoseal_interval: u64,
 
+	/// Disable auto-sealing blocks on new transactions in the `--dev` mode.
+	#[structopt(long)]
+	pub disable_autoseal_on_tx: bool,
+
 	/// Disable automatic hardware benchmarks.
 	///
 	/// By default these benchmarks are automatically ran at startup and measure
--- a/node/cli/src/command.rs
+++ b/node/cli/src/command.rs
@@ -488,7 +488,7 @@
 					config.state_pruning = Some(sc_service::PruningMode::ArchiveAll);
 
 					return start_node_using_chain_runtime! {
-						start_dev_node(config, autoseal_interval).map_err(Into::into)
+						start_dev_node(config, autoseal_interval, cli.disable_autoseal_on_tx).map_err(Into::into)
 					};
 				};
 
--- a/node/cli/src/service.rs
+++ b/node/cli/src/service.rs
@@ -886,6 +886,7 @@
 pub fn start_dev_node<Runtime, RuntimeApi, ExecutorDispatch>(
 	config: Configuration,
 	autoseal_interval: Duration,
+	disable_autoseal_on_tx: bool,
 ) -> sc_service::error::Result<TaskManager>
 where
 	Runtime: RuntimeInstance + Send + Sync + 'static,
@@ -980,6 +981,7 @@
 				.pool()
 				.validated_pool()
 				.import_notification_stream()
+				.filter(move |_| futures::future::ready(!disable_autoseal_on_tx))
 				.map(|_| EngineCommand::SealNewBlock {
 					create_empty: true,
 					finalize: false, // todo:collator finalize true