diff --git a/packages/bolt-connection/src/pool/pool.js b/packages/bolt-connection/src/pool/pool.js
index 0f8238fbe..6d3bd38fb 100644
--- a/packages/bolt-connection/src/pool/pool.js
+++ b/packages/bolt-connection/src/pool/pool.js
@@ -113,6 +113,7 @@ class Pool {
           )
         }
       }, this._acquisitionTimeout)
+      typeof timeoutId === 'object' && timeoutId.unref()
 
       request = new PendingRequest(key, acquisitionContext, config, resolve, reject, timeoutId, this._log)
       allRequests[key].push(request)
diff --git a/packages/neo4j-driver-deno/lib/bolt-connection/pool/pool.js b/packages/neo4j-driver-deno/lib/bolt-connection/pool/pool.js
index 446de36d5..072fc47e3 100644
--- a/packages/neo4j-driver-deno/lib/bolt-connection/pool/pool.js
+++ b/packages/neo4j-driver-deno/lib/bolt-connection/pool/pool.js
@@ -113,6 +113,7 @@ class Pool {
           )
         }
       }, this._acquisitionTimeout)
+      typeof timeoutId === 'object' && timeoutId.unref()
 
       request = new PendingRequest(key, acquisitionContext, config, resolve, reject, timeoutId, this._log)
       allRequests[key].push(request)