diff --git a/libraries/net/node.cpp b/libraries/net/node.cpp
index 990d1f0b..419e095a 100644
--- a/libraries/net/node.cpp
+++ b/libraries/net/node.cpp
@@ -559,14 +559,14 @@ namespace graphene { namespace net { namespace detail {
 
       peer_database             _potential_peer_db;
       fc::promise<void>::ptr    _retrigger_connect_loop_promise;
-      bool                      _potential_peer_database_updated;
+      std::atomic_bool          _potential_peer_database_updated;
       fc::future<void>          _p2p_network_connect_loop_done;
       // @}
 
       /// used by the task that fetches sync items during synchronization
       // @{
       fc::promise<void>::ptr    _retrigger_fetch_sync_items_loop_promise;
-      bool                      _sync_items_to_fetch_updated;
+      std::atomic_bool          _sync_items_to_fetch_updated;
       fc::future<void>          _fetch_sync_items_loop_done;
 
       typedef std::unordered_map<graphene::net::block_id_type, fc::time_point> active_sync_requests_map;
@@ -576,13 +576,13 @@ namespace graphene { namespace net { namespace detail {
       std::list<graphene::net::block_message> _received_sync_items; /// list of sync blocks we've received, but can't yet process because we are still missing blocks that come earlier in the chain
       // @}
 
-      fc::future<void> _process_backlog_of_sync_blocks_done;
-      bool _suspend_fetching_sync_blocks;
+      fc::future<void>  _process_backlog_of_sync_blocks_done;
+      std::atomic_bool  _suspend_fetching_sync_blocks;
 
       /// used by the task that fetches items during normal operation
       // @{
       fc::promise<void>::ptr _retrigger_fetch_item_loop_promise;
-      bool                   _items_to_fetch_updated;
+      std::atomic_bool       _items_to_fetch_updated;
       fc::future<void>       _fetch_item_loop_done;
 
       struct item_id_index{};