diff --git a/massa-protocol-worker/src/protocol_worker.rs b/massa-protocol-worker/src/protocol_worker.rs
index 4455011463..003cdd0e34 100644
--- a/massa-protocol-worker/src/protocol_worker.rs
+++ b/massa-protocol-worker/src/protocol_worker.rs
@@ -25,6 +25,7 @@ use massa_protocol_exports::{
 use massa_storage::Storage;
 use massa_time::{MassaTime, TimeError};
 use std::collections::{HashMap, HashSet};
+use std::mem;
 use tokio::{
     sync::mpsc,
     sync::mpsc::error::SendTimeoutError,
@@ -158,6 +159,8 @@ pub struct ProtocolWorker {
     pub(crate) op_batch_buffer: OperationBatchBuffer,
     /// Shared storage.
     pub(crate) storage: Storage,
+    /// Operations to announce at the next interval.
+    operations_to_announce: Vec<OperationId>,
 }
 
 /// channels used by the protocol worker
@@ -213,6 +216,7 @@ impl ProtocolWorker {
                 config.operation_batch_buffer_capacity,
             ),
             storage,
+            operations_to_announce: Default::default(),
         }
     }
 
@@ -292,9 +296,14 @@ impl ProtocolWorker {
                     self.update_ask_block(&mut block_ask_timer).await?;
                 }
 
-                // operation ask timer
+                // operation ask, and announce, timer
                 _ = &mut operation_batch_proc_period_timer => {
-                    massa_trace!("protocol.protocol_worker.run_loop.operation_ask_timer", { });
+                    massa_trace!("protocol.protocol_worker.run_loop.operation_ask_and_announce_timer", { });
+
+                    // Announce operations.
+                    self.announce_ops().await;
+
+                    // Update operations to ask.
                     self.update_ask_operation(&mut operation_batch_proc_period_timer).await?;
                 }
                 // operation prune timer
@@ -311,9 +320,10 @@ impl ProtocolWorker {
 
     /// Announce a set of operations to active nodes who do not know about it yet.
     /// Side effect: notes nodes as knowing about those operations from now on.
-    async fn announce_ops(&mut self, operations: &[OperationId]) {
+    async fn announce_ops(&mut self) {
+        let operations = mem::take(&mut self.operations_to_announce);
         massa_trace!("protocol.protocol_worker.propagate_operations.begin", {
-            "operation": operations
+            "operations": operations
         });
         for (node, node_info) in self.active_nodes.iter_mut() {
             let new_ops: Vec<OperationId> = operations
@@ -334,6 +344,18 @@ impl ProtocolWorker {
         }
     }
 
+    /// Add an list of operations to a queue pending for announcement.
+    async fn note_operations_to_announce(&mut self, operations: &[OperationId]) {
+        // If we have too many operations to announce,
+        // announce them immediately, clearing the data at the same time.
+        if self.operations_to_announce.len() > self.config.max_known_ops_size {
+            self.announce_ops().await;
+        }
+
+        // Add the operations to a list for announcement at the next interval.
+        self.operations_to_announce.extend_from_slice(operations);
+    }
+
     async fn propagate_endorsements(&mut self, storage: &Storage) {
         massa_trace!(
             "protocol.protocol_worker.process_command.propagate_endorsements.begin",
@@ -482,7 +504,7 @@ impl ProtocolWorker {
 
                 // Announce operations to active nodes not knowing about it.
                 let to_announce: Vec<OperationId> = operation_ids.iter().copied().collect();
-                self.announce_ops(&to_announce).await;
+                self.note_operations_to_announce(&to_announce).await;
             }
             ProtocolCommand::PropagateEndorsements(endorsements) => {
                 self.propagate_endorsements(&endorsements).await;
@@ -987,7 +1009,7 @@ impl ProtocolWorker {
             ops_to_propagate.drop_operation_refs(&operations_to_not_propagate);
             let to_announce: Vec<OperationId> =
                 ops_to_propagate.get_op_refs().iter().copied().collect();
-            self.announce_ops(&to_announce).await;
+            self.note_operations_to_announce(&to_announce).await;
 
             // Add to pool
             self.pool_controller.add_operations(ops);