diff --git a/pkg/controller/node/ipam/cloud_cidr_allocator.go b/pkg/controller/node/ipam/cloud_cidr_allocator.go
index 87fba8bb0a8..98b65b22e67 100644
--- a/pkg/controller/node/ipam/cloud_cidr_allocator.go
+++ b/pkg/controller/node/ipam/cloud_cidr_allocator.go
@@ -146,7 +146,10 @@ func (ca *cloudCIDRAllocator) worker(stopChan <-chan struct{}) {
 				glog.Warning("Channel nodeCIDRUpdateChannel was unexpectedly closed")
 				return
 			}
-			ca.updateCIDRAllocation(workItem)
+			if err := ca.updateCIDRAllocation(workItem); err != nil {
+				// Requeue the failed node for update again.
+				ca.nodeUpdateChannel <- workItem
+			}
 		case <-stopChan:
 			return
 		}
diff --git a/pkg/controller/node/ipam/range_allocator.go b/pkg/controller/node/ipam/range_allocator.go
index 6761e73fde9..d3037b1d1d1 100644
--- a/pkg/controller/node/ipam/range_allocator.go
+++ b/pkg/controller/node/ipam/range_allocator.go
@@ -176,7 +176,10 @@ func (r *rangeAllocator) worker(stopChan <-chan struct{}) {
 				glog.Warning("Channel nodeCIDRUpdateChannel was unexpectedly closed")
 				return
 			}
-			r.updateCIDRAllocation(workItem)
+			if err := r.updateCIDRAllocation(workItem); err != nil {
+				// Requeue the failed node for update again.
+				r.nodeCIDRUpdateChannel <- workItem
+			}
 		case <-stopChan:
 			return
 		}