diff --git a/zone/hate_list.cpp b/zone/hate_list.cpp
index 10b46a356..01507174f 100644
--- a/zone/hate_list.cpp
+++ b/zone/hate_list.cpp
@@ -107,6 +107,7 @@ void HateList::SetHateAmountOnEnt(Mob* other, uint32 in_hate, uint32 in_damage)
 			entity->hatelist_damage = in_damage;
 		if (in_hate > 0)
 			entity->stored_hate_amount = in_hate;
+		entity->last_modified = Timer::GetCurrentTime();
 	}
 }
 
@@ -208,6 +209,7 @@ void HateList::AddEntToHateList(Mob *in_entity, int32 in_hate, int32 in_damage,
 			in_entity->CastToClient()->IncrementAggroCount();
 		}
 	}
+	entity->last_modified = Timer::GetCurrentTime();
 }
 
 bool HateList::RemoveEntFromHateList(Mob *in_entity)
@@ -646,3 +648,31 @@ void HateList::SpellCast(Mob *caster, uint32 spell_id, float range, Mob* ae_cent
 		iter++;
 	}
 }
+
+void HateList::RemoveStaleEntries(int time_ms, float dist)
+{
+	auto it = list.begin();
+
+	auto cur_time = Timer::GetCurrentTime();
+
+	while (it != list.end()) {
+		auto m = (*it)->entity_on_hatelist;
+		if (m) {
+			// 10 mins or distance
+			if ((cur_time - (*it)->last_modified > time_ms) || hate_owner->CalculateDistance(m->GetX(), m->GetY(), m->GetZ()) > dist) {
+				parse->EventNPC(EVENT_HATE_LIST, hate_owner->CastToNPC(), m, "0", 0);
+
+				if (m->IsClient()) {
+					m->CastToClient()->DecrementAggroCount();
+					m->CastToClient()->RemoveXTarget(hate_owner, true);
+				}
+
+				delete (*it);
+				it = list.erase(it);
+				continue;
+			}
+		}
+		++it;
+	}
+}
+
diff --git a/zone/hate_list.h b/zone/hate_list.h
index f0e2b7618..1ffb1eaf8 100644
--- a/zone/hate_list.h
+++ b/zone/hate_list.h
@@ -31,6 +31,7 @@ struct struct_HateList
 	int32 hatelist_damage;
 	uint32 stored_hate_amount;
 	bool is_entity_frenzy;
+	uint32 last_modified; // we need to remove this if it gets higher than 10 mins
 };
 
 class HateList
@@ -65,6 +66,7 @@ public:
 	void SetHateOwner(Mob *new_hate_owner) { hate_owner = new_hate_owner; }
 	void SpellCast(Mob *caster, uint32 spell_id, float range, Mob *ae_center = nullptr);
 	void WipeHateList();
+	void RemoveStaleEntries(int time_ms, float dist);
 
 
 protected:
diff --git a/zone/mob_ai.cpp b/zone/mob_ai.cpp
index a05aa1343..920ec8863 100644
--- a/zone/mob_ai.cpp
+++ b/zone/mob_ai.cpp
@@ -1021,6 +1021,10 @@ void Mob::AI_Process() {
 
 		if (!(m_PlayerState & static_cast<uint32>(PlayerState::Aggressive)))
 			SendAddPlayerState(PlayerState::Aggressive);
+
+		// NPCs will forget people after 10 mins of not interacting with them or out of range
+		// both of these maybe zone specific, hardcoded for now
+		hate_list.RemoveStaleEntries(600000, 600.0f);
 		// we are prevented from getting here if we are blind and don't have a target in range
 		// from above, so no extra blind checks needed
 		if ((IsRooted() && !GetSpecialAbility(IGNORE_ROOT_AGGRO_RULES)) || IsBlind())