diff --git a/build.gradle.kts b/build.gradle.kts
index 5b0fd6a5..4b26a0c5 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -24,8 +24,8 @@ repositories {
 }
 
 dependencies {
-    compileOnly("org.spigotmc", "spigot", "1.17-R0.1-SNAPSHOT")
-    testCompileOnly("org.spigotmc", "spigot", "1.17-R0.1-SNAPSHOT")
+    compileOnly("org.spigotmc", "spigot", "1.17.1-R0.1-SNAPSHOT")
+    testCompileOnly("org.spigotmc", "spigot", "1.17.1-R0.1-SNAPSHOT")
 
     api("org.jetbrains.kotlinx:kotlinx-serialization-json:1.2.1")
     api("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.0")
diff --git a/readme.md b/readme.md
index 7919d540..7634754e 100644
--- a/readme.md
+++ b/readme.md
@@ -1,7 +1,7 @@
 # KSpigot
 
 [ ![Latest version](https://img.shields.io/maven-central/v/net.axay/kspigot?color=pink&label=latest%20version&style=for-the-badge) ](https://repo1.maven.org/maven2/net/axay/kspigot/)
-[ ![Guide](https://img.shields.io/badge/guide-read-%23c2ff73?style=for-the-badge) ](https://bluefireoly.github.io/KSpigot/)
+[ ![Guide](https://img.shields.io/badge/guide-read-%23c2ff73?style=for-the-badge) ](https://jakobkmar.github.io/KSpigot/)
 [ ![Discord](https://img.shields.io/discord/771140534118383626?color=cyan&label=DISCORD&style=for-the-badge) ](https://discord.gg/CJDUVuJ) <br>
 
 KSpigot is a Kotlin extension for the popular [spigot server software](https://spigotmc.org/) for minecraft. It adds
diff --git a/src/main/kotlin/net/axay/kspigot/gui/GUI.kt b/src/main/kotlin/net/axay/kspigot/gui/GUI.kt
index a2881441..23b35774 100644
--- a/src/main/kotlin/net/axay/kspigot/gui/GUI.kt
+++ b/src/main/kotlin/net/axay/kspigot/gui/GUI.kt
@@ -19,6 +19,7 @@ class GUIData<T : ForInventory>(
     val transitionTo: InventoryChangeEffect?,
     val transitionFrom: InventoryChangeEffect?,
     internal val generalOnClick: ((GUIClickEvent<T>) -> Unit)?,
+    internal val onClose: ((GUICloseEvent<T>) -> Unit)?
 )
 
 abstract class GUI<T : ForInventory>(
@@ -95,9 +96,15 @@ class GUIIndividual<T : ForInventory>(
     }
 
     init {
-        if (resetOnClose) {
+        if (resetOnClose || data.onClose != null) {
             listen<InventoryCloseEvent> {
-                deleteInstance(it.player as? Player ?: return@listen)
+                if (data.onClose != null && playerInstances[it.player]?.bukkitInventory == it.inventory) {
+                    data.onClose.invoke(GUICloseEvent(it, playerInstances[it.player]!!, it.player as Player))
+                }
+
+                if (resetOnClose) {
+                    deleteInstance(it.player as? Player ?: return@listen)
+                }
             }
         }
 
diff --git a/src/main/kotlin/net/axay/kspigot/gui/GUIBuilder.kt b/src/main/kotlin/net/axay/kspigot/gui/GUIBuilder.kt
index 6b6b3822..c199e24c 100644
--- a/src/main/kotlin/net/axay/kspigot/gui/GUIBuilder.kt
+++ b/src/main/kotlin/net/axay/kspigot/gui/GUIBuilder.kt
@@ -3,6 +3,7 @@
 package net.axay.kspigot.gui
 
 import net.axay.kspigot.gui.elements.*
+import org.bukkit.event.inventory.InventoryCloseEvent
 import org.bukkit.inventory.ItemStack
 import kotlin.math.absoluteValue
 
@@ -46,6 +47,8 @@ class GUIBuilder<T : ForInventory>(
 
     private var onClickElement: ((GUIClickEvent<T>) -> Unit)? = null
 
+    private var onClose: ((GUICloseEvent<T>) -> Unit)? = null
+
     /**
      * Opens the builder for a new page and adds
      * the new page to the GUI.
@@ -63,8 +66,16 @@ class GUIBuilder<T : ForInventory>(
         onClickElement = onClick
     }
 
+    /**
+     * A callback executed when the user closes
+     * the inventory.
+     */
+    fun onClose(onClose: (GUICloseEvent<T>) -> Unit) {
+        this.onClose = onClose
+    }
+
     internal fun build() = guiCreator.createInstance(
-        GUIData(type, title, guiPages, defaultPage, transitionTo, transitionFrom, onClickElement)
+        GUIData(type, title, guiPages, defaultPage, transitionTo, transitionFrom, onClickElement, onClose)
     )
 }
 
diff --git a/src/main/kotlin/net/axay/kspigot/gui/GUICloseEvent.kt b/src/main/kotlin/net/axay/kspigot/gui/GUICloseEvent.kt
new file mode 100644
index 00000000..4ea6ec31
--- /dev/null
+++ b/src/main/kotlin/net/axay/kspigot/gui/GUICloseEvent.kt
@@ -0,0 +1,10 @@
+package net.axay.kspigot.gui
+
+import org.bukkit.entity.Player
+import org.bukkit.event.inventory.InventoryCloseEvent
+
+class GUICloseEvent<T : ForInventory>(
+    val bukkitEvent: InventoryCloseEvent,
+    val guiInstance: GUIInstance<T>,
+    val player: Player,
+)