diff --git a/reapi/extra/amxmodx/scripting/include/reapi_gamedll_const.inc b/reapi/extra/amxmodx/scripting/include/reapi_gamedll_const.inc
index 82749cb4..a20fc927 100644
--- a/reapi/extra/amxmodx/scripting/include/reapi_gamedll_const.inc
+++ b/reapi/extra/amxmodx/scripting/include/reapi_gamedll_const.inc
@@ -39,6 +39,7 @@
 	#define RG_CBasePlayerWeapon_DefaultShotgunReload RG_CBaseWeapon_DefShotgunReload
 	#define RG_CBasePlayer_Observer_SetMode RG_CBasePlayer_Observer_SetMod
 	#define RG_CBasePlayer_Observer_FindNextPlayer RG_CBasePlayer_Observer_FindNxt
+	#define RG_CSGameRules_PlayerRelationship RG_CSGameRules_PlayerRelation
 #endif
 
 /**
@@ -1272,6 +1273,13 @@ enum GamedllFunc_CSGameRules
 	* Params:           (const pKiller, const pVictim, const pAssister, const pevInflictor, const killerWeaponName[], const DeathMessageFlags:iDeathMessageFlags, const KillRarity:iRarityOfKill)
 	*/
 	RG_CSGameRules_SendDeathMessage,
+	
+	/*
+	* Description:      What is the player's relationship with this entity?
+	* Return type:      int
+	* Params:           (const pPlayer, const pEntity)
+	*/
+	RG_CSGameRules_PlayerRelationship,
 };
 
 /**
diff --git a/reapi/include/cssdk/dlls/regamedll_api.h b/reapi/include/cssdk/dlls/regamedll_api.h
index 62273fe6..449957ad 100644
--- a/reapi/include/cssdk/dlls/regamedll_api.h
+++ b/reapi/include/cssdk/dlls/regamedll_api.h
@@ -40,7 +40,7 @@
 #include <API/CSInterfaces.h>
 
 #define REGAMEDLL_API_VERSION_MAJOR 5
-#define REGAMEDLL_API_VERSION_MINOR 30
+#define REGAMEDLL_API_VERSION_MINOR 31
 
 // CBasePlayer::Spawn hook
 typedef IHookChainClass<void, class CBasePlayer> IReGameHook_CBasePlayer_Spawn;
@@ -638,6 +638,10 @@ typedef IHookChainRegistryClass<void, class CBasePlayer> IReGameHookRegistry_CBa
 typedef IHookChainClass<void, class CBasePlayer, class CBasePlayer *, float, float> IReGameHook_CBasePlayer_TakeDamageImpulse;
 typedef IHookChainRegistryClass<void, class CBasePlayer, class CBasePlayer *, float, float> IReGameHookRegistry_CBasePlayer_TakeDamageImpulse;
 
+// CHalfLifeMultiplay::PlayerRelationship hook
+typedef IHookChain<int, CBasePlayer *, CBaseEntity *> IReGameHook_CSGameRules_PlayerRelationship;
+typedef IHookChainRegistry<int, CBasePlayer *, CBaseEntity *> IReGameHookRegistry_CSGameRules_PlayerRelationship;
+
 class IReGameHookchains {
 public:
 	virtual ~IReGameHookchains() {}
@@ -802,6 +806,7 @@ class IReGameHookchains {
 	virtual IReGameHookRegistry_CBasePlayer_RemoveAllItems *CBasePlayer_RemoveAllItems() = 0;
 	virtual IReGameHookRegistry_CBasePlayer_UpdateStatusBar *CBasePlayer_UpdateStatusBar() = 0;
 	virtual IReGameHookRegistry_CBasePlayer_TakeDamageImpulse *CBasePlayer_TakeDamageImpulse() = 0;
+	virtual IReGameHookRegistry_CSGameRules_PlayerRelationship *CSGameRules_PlayerRelationship() = 0;
 };
 
 struct ReGameFuncs_t {
diff --git a/reapi/src/hook_callback.cpp b/reapi/src/hook_callback.cpp
index fdb723e4..457069d2 100644
--- a/reapi/src/hook_callback.cpp
+++ b/reapi/src/hook_callback.cpp
@@ -1786,6 +1786,16 @@ void CBasePlayer_TakeDamageImpulse(IReGameHook_CBasePlayer_TakeDamageImpulse *ch
 	callVoidForward(RG_CBasePlayer_TakeDamageImpulse, original, indexOfEdict(pthis->pev), indexOfEdict(pAttacker->pev), flKnockbackForce, flVelModifier);
 }
 
+int CSGameRules_PlayerRelationship(IReGameHook_CSGameRules_PlayerRelationship *chain, CBasePlayer *pPlayer, CBaseEntity *pEntity)
+{
+	auto original = [chain](int _pPlayer, int _pEntity)
+	{
+		return chain->callNext(getPrivate<CBasePlayer>(_pPlayer), getPrivate<CBaseEntity>(_pEntity));
+	};
+
+	return callForward(RG_CSGameRules_PlayerRelationship, original, indexOfEdict(pPlayer->pev), indexOfEdict(pEntity->pev));
+}
+
 /*
 * VTC functions
 */
diff --git a/reapi/src/hook_callback.h b/reapi/src/hook_callback.h
index 1065997a..1d7e7a4c 100644
--- a/reapi/src/hook_callback.h
+++ b/reapi/src/hook_callback.h
@@ -576,6 +576,7 @@ void CBasePlayer_RemoveAllItems(IReGameHook_CBasePlayer_RemoveAllItems *chain, C
 void CSGameRules_SendDeathMessage(IReGameHook_CSGameRules_SendDeathMessage *chain, CBaseEntity *pKiller, CBasePlayer *pVictim, CBasePlayer *pAssister, entvars_t *pevInflictor, const char *killerWeaponName, int iDeathMessageFlags, int iRarityOfKill);
 void CBasePlayer_UpdateStatusBar(IReGameHook_CBasePlayer_UpdateStatusBar *chain, CBasePlayer *pthis);
 void CBasePlayer_TakeDamageImpulse(IReGameHook_CBasePlayer_TakeDamageImpulse *chain, CBasePlayer *pthis, CBasePlayer *pAttacker, float flKnockbackForce, float flVelModifier);
+int CSGameRules_PlayerRelationship(IReGameHook_CSGameRules_PlayerRelationship *chain, CBasePlayer *pPlayer, CBaseEntity *pEntity);
 
 /*
 * VTC functions
diff --git a/reapi/src/hook_list.cpp b/reapi/src/hook_list.cpp
index cb8bd17e..64f4b11d 100644
--- a/reapi/src/hook_list.cpp
+++ b/reapi/src/hook_list.cpp
@@ -250,6 +250,7 @@ hook_t hooklist_gamerules[] = {
 	DLL(CSGameRules_TeamStacked),
 	DLL(CSGameRules_PlayerGotWeapon),
 	DLL(CSGameRules_SendDeathMessage),
+	DLL(CSGameRules_PlayerRelationship),
 };
 
 hook_t hooklist_grenade[] = {
diff --git a/reapi/src/hook_list.h b/reapi/src/hook_list.h
index 1cdb7bb4..5ea51001 100644
--- a/reapi/src/hook_list.h
+++ b/reapi/src/hook_list.h
@@ -310,6 +310,7 @@ enum GamedllFunc_CSGameRules
 	RG_CSGameRules_TeamStacked,
 	RG_CSGameRules_PlayerGotWeapon,
 	RG_CSGameRules_SendDeathMessage,
+	RG_CSGameRules_PlayerRelationship,
 
 	// [...]
 };
diff --git a/reapi/version/version.h b/reapi/version/version.h
index d3e8b9db..3838a2f8 100644
--- a/reapi/version/version.h
+++ b/reapi/version/version.h
@@ -6,5 +6,5 @@
 #pragma once
 
 #define VERSION_MAJOR		5
-#define VERSION_MINOR		29
+#define VERSION_MINOR		30
 #define VERSION_MAINTENANCE	0