diff --git a/src/core/meshcop/dataset_manager.cpp b/src/core/meshcop/dataset_manager.cpp
index d241b1f..ac56fa2 100644
--- a/src/core/meshcop/dataset_manager.cpp
+++ b/src/core/meshcop/dataset_manager.cpp
@@ -83,6 +83,20 @@
 
     if (IsActiveDataset())
     {
+#if OPENTHREAD_CONFIG_THREAD_VERSION == OT_THREAD_VERSION_1_1 && OPENTHREAD_FTD
+        SecurityPolicyTlv securityPolicyTlv = *dataset.GetTlv<SecurityPolicyTlv>();
+
+        if (securityPolicyTlv.GetLength() > sizeof(securityPolicyTlv) - sizeof(Tlv))
+        {
+            securityPolicyTlv.SetLength(sizeof(securityPolicyTlv) - sizeof(Tlv));
+            SuccessOrExit(error = dataset.SetTlv(securityPolicyTlv));
+
+            mTimestamp.SetSeconds(mTimestamp.GetSeconds() + 1);
+
+            dataset.SetTimestamp(mTimestamp);
+            SuccessOrExit(error = mLocal.Save(dataset));
+        }
+#endif
         IgnoreError(dataset.ApplyConfiguration(GetInstance()));
     }