diff --git a/CHANGELOG.md b/CHANGELOG.md
index aaf9eb83ebd..e250b582335 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -32,6 +32,7 @@ https://github.com/nwnxee/unified/compare/build8193.36.12...HEAD
 - Race: SuppressCreatureRaceEffects()
 - Race: ReactivateCreatureRaceEffects()
 - Creature: {Get|Set}MulticlassLimit()
+- Util: UpdateResourceDirectory()
 
 ### Changed
 - Player: added bChatWindow parameter to FloatingTextStringOnCreature()
diff --git a/Plugins/Util/NWScript/nwnx_util.nss b/Plugins/Util/NWScript/nwnx_util.nss
index ef32e35515e..3ac3f14851d 100644
--- a/Plugins/Util/NWScript/nwnx_util.nss
+++ b/Plugins/Util/NWScript/nwnx_util.nss
@@ -263,6 +263,11 @@ int NWNX_Util_CleanResourceDirectory(string sAlias, int nResType = 0xFFFF);
 /// @return The name
 string NWNX_Util_GetModuleTlkFile();
 
+/// @brief Update a resource directory by having ResMan reindex it.
+/// @param sAlias A resource directory alias, eg: TEMP
+/// @return TRUE if successful, FALSE on error.
+int NWNX_Util_UpdateResourceDirectory(string sAlias);
+
 /// @}
 
 string NWNX_Util_GetCurrentScriptName(int depth = 0)
@@ -657,3 +662,11 @@ string NWNX_Util_GetModuleTlkFile()
     NWNX_CallFunction(NWNX_Util, sFunc);
     return NWNX_GetReturnValueString();
 }
+
+int NWNX_Util_UpdateResourceDirectory(string sAlias)
+{
+    string sFunc = "UpdateResourceDirectory";
+    NWNX_PushArgumentString(sAlias);
+    NWNX_CallFunction(NWNX_Util, sFunc);
+    return NWNX_GetReturnValueInt();
+}
diff --git a/Plugins/Util/Util.cpp b/Plugins/Util/Util.cpp
index 12f377f8dbe..b52f5481754 100644
--- a/Plugins/Util/Util.cpp
+++ b/Plugins/Util/Util.cpp
@@ -798,3 +798,10 @@ NWNX_EXPORT ArgumentStack GetModuleTlkFile(ArgumentStack&& args)
     CNWSModule *pMod = Utils::GetModule();
     return pMod->m_sModuleAltTLKFile;
 }
+
+NWNX_EXPORT ArgumentStack UpdateResourceDirectory(ArgumentStack&& args)
+{
+    const auto alias = args.extract<std::string>();
+      ASSERT_OR_THROW(!alias.empty());
+    return Globals::ExoResMan()->UpdateResourceDirectory(alias + ":");
+}