diff --git a/CHANGELOG.md b/CHANGELOG.md
index 933c5a6..e510cd3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,9 @@
-# devel
+# 3.13.0.0
 
 Many thanks to @xyzminecraftserver for sponsoring the project!
 
+This release is only rudimentarily tested since I am not currently playing the pack. Please report any issues you run into.
+
 * Updated dependencies for Vault Hunters 3.13.
 
 # 3.12.4.0 (2023-11-19)
diff --git a/src/main/java/tv/alterNERD/VaultModTweaks/integration/mixin/MixinPlayerExpertisesData.java b/src/main/java/tv/alterNERD/VaultModTweaks/integration/mixin/MixinPlayerExpertisesData.java
new file mode 100644
index 0000000..5fbd33f
--- /dev/null
+++ b/src/main/java/tv/alterNERD/VaultModTweaks/integration/mixin/MixinPlayerExpertisesData.java
@@ -0,0 +1,42 @@
+/**
+ * Copyright 2023 alterNERDtive.
+ * 
+ * This file is part of Vault Mod Tweaks.
+ * 
+ * Vault Mod Tweaks is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * Vault Mod Tweaks is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with Vault Mod Tweaks.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package tv.alterNERD.VaultModTweaks.integration.mixin;
+
+import java.util.UUID;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Overwrite;
+import org.spongepowered.asm.mixin.Shadow;
+import iskallia.vault.skill.tree.ExpertiseTree;
+import iskallia.vault.world.data.PlayerExpertisesData;
+import net.minecraft.world.entity.player.Player;
+
+@Mixin(PlayerExpertisesData.class)
+public abstract class MixinPlayerExpertisesData {
+    @Overwrite(remap=false)
+    ExpertiseTree getExpertises(Player player) {
+        // SkillContext.of(player)
+        // something something LearnableSkill.learn(context) auf den Expertise skill für jeweler
+        return this.getExpertises(player.getUUID());
+    }
+
+    @Shadow(remap=false)
+    ExpertiseTree getExpertises(UUID uuid) {
+        return null;
+    }
+}