diff --git a/build.gradle.kts b/build.gradle.kts
index ea4a622..b4fdd0c 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -16,7 +16,7 @@ plugins {
 }
 
 group = "xyz.alexcrea"
-version = "1.10.0"
+version = "1.10.1"
 
 repositories {
     // EcoEnchants
diff --git a/nms/v1_21R1/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R1_ExternGuiTester.kt b/nms/v1_21R1/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R1_ExternGuiTester.kt
index eeee7ec..3111735 100644
--- a/nms/v1_21R1/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R1_ExternGuiTester.kt
+++ b/nms/v1_21R1/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R1_ExternGuiTester.kt
@@ -7,28 +7,11 @@ import xyz.alexcrea.cuanvil.dependency.gui.ExternGuiTester
 class v1_21R1_ExternGuiTester: ExternGuiTester {
     override val wesjdAnvilGuiName = "Wrapper1_21_R1"
 
-    var tested = false;
-    var possible = false;
-
     override fun getContainerClass(view: InventoryView): Class<Any>? {
-        // In case we are in a test environment
-        if(!tested) testClassExist()
-        if(!possible) return null
-
         if(view !is CraftInventoryView<*, *>) return null
         val container = view.handle
 
         return container.javaClass
     }
 
-    fun testClassExist(){
-        tested = true;
-        try {
-            Class.forName("org.bukkit.craftbukkit.inventory.CraftInventoryView")
-            possible = true
-        } catch (e: ClassNotFoundException){
-            possible = false
-        }
-    }
-
 }
diff --git a/nms/v1_21R2/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R2_ExternGuiTester.kt b/nms/v1_21R2/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R2_ExternGuiTester.kt
new file mode 100644
index 0000000..2604a16
--- /dev/null
+++ b/nms/v1_21R2/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R2_ExternGuiTester.kt
@@ -0,0 +1,34 @@
+package xyz.alexcrea.cuanvil.dependency.gui.version
+
+import org.bukkit.craftbukkit.inventory.CraftInventoryView
+import org.bukkit.inventory.InventoryView
+import xyz.alexcrea.cuanvil.dependency.gui.ExternGuiTester
+
+class v1_21R2_ExternGuiTester: ExternGuiTester {
+    override val wesjdAnvilGuiName = "Wrapper1_21_R2"
+
+    var tested = false;
+    var possible = false;
+
+    override fun getContainerClass(view: InventoryView): Class<Any>? {
+        // In case we are in a test environment
+        if(!tested) testClassExist()
+        if(!possible) return null
+
+        if(view !is CraftInventoryView<*, *>) return null
+        val container = view.handle
+
+        return container.javaClass
+    }
+
+    fun testClassExist(){
+        tested = true;
+        try {
+            Class.forName("org.bukkit.craftbukkit.inventory.CraftInventoryView")
+            possible = true
+        } catch (e: ClassNotFoundException){
+            possible = false
+        }
+    }
+
+}
diff --git a/nms/v1_21R3/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R3_ExternGuiTester.kt b/nms/v1_21R3/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R3_ExternGuiTester.kt
new file mode 100644
index 0000000..70c5df9
--- /dev/null
+++ b/nms/v1_21R3/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R3_ExternGuiTester.kt
@@ -0,0 +1,17 @@
+package xyz.alexcrea.cuanvil.dependency.gui.version
+
+import org.bukkit.craftbukkit.inventory.CraftInventoryView
+import org.bukkit.inventory.InventoryView
+import xyz.alexcrea.cuanvil.dependency.gui.ExternGuiTester
+
+class v1_21R3_ExternGuiTester: ExternGuiTester {
+    override val wesjdAnvilGuiName = "Wrapper1_21_R3"
+
+    override fun getContainerClass(view: InventoryView): Class<Any>? {
+        if(view !is CraftInventoryView<*, *>) return null
+        val container = view.handle
+
+        return container.javaClass
+    }
+
+}
diff --git a/nms/v1_21R4/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R4_ExternGuiTester.kt b/nms/v1_21R4/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R4_ExternGuiTester.kt
new file mode 100644
index 0000000..6b76451
--- /dev/null
+++ b/nms/v1_21R4/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/version/v1_21R4_ExternGuiTester.kt
@@ -0,0 +1,34 @@
+package xyz.alexcrea.cuanvil.dependency.gui.version
+
+import org.bukkit.craftbukkit.inventory.CraftInventoryView
+import org.bukkit.inventory.InventoryView
+import xyz.alexcrea.cuanvil.dependency.gui.ExternGuiTester
+
+class v1_21R4_ExternGuiTester: ExternGuiTester {
+    override val wesjdAnvilGuiName = "Wrapper1_21_R4"
+
+    var tested = false;
+    var possible = false;
+
+    override fun getContainerClass(view: InventoryView): Class<Any>? {
+        // In case we are in a test environment
+        if(!tested) testClassExist()
+        if(!possible) return null
+
+        if(view !is CraftInventoryView<*, *>) return null
+        val container = view.handle
+
+        return container.javaClass
+    }
+
+    fun testClassExist(){
+        tested = true;
+        try {
+            Class.forName("org.bukkit.craftbukkit.inventory.CraftInventoryView")
+            possible = true
+        } catch (e: ClassNotFoundException){
+            possible = false
+        }
+    }
+
+}
diff --git a/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/GuiTesterSelector.kt b/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/GuiTesterSelector.kt
index b1c27a1..8c6ad26 100644
--- a/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/GuiTesterSelector.kt
+++ b/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/gui/GuiTesterSelector.kt
@@ -41,6 +41,9 @@ object GuiTesterSelector {
 
                 21 -> when (versionParts[2]) {
                     0, 1 -> v1_21R1_ExternGuiTester()
+                    2, 3 -> v1_21R2_ExternGuiTester()
+                    4 -> v1_21R3_ExternGuiTester()
+                    5 -> v1_21R4_ExternGuiTester()
                     else -> null
                 }