diff --git a/build.gradle b/build.gradle
index 7ddb9e7..479e3b6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 plugins {
-	id 'fabric-loom' version '1.0-SNAPSHOT'
+	id 'fabric-loom' version '1.4.+'
 	id 'maven-publish'
 	id "com.modrinth.minotaur" version "2.+"
 	id 'com.matthewprenger.cursegradle' version '1.4.0'
@@ -34,13 +34,13 @@ dependencies {
 	// Fabric API. This is technically optional, but you probably want it anyway.
 	modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
 
-	modImplementation include('xyz.nucleoid:server-translations-api:2.1.0+1.20.2-rc2')
-	modImplementation include('eu.pb4:polymer-core:0.6.0-rc.1+1.20.2-rc2')
-	modImplementation include('eu.pb4:polymer-virtual-entity:0.6.0-rc.1+1.20.2-rc2')
-	modImplementation include('eu.pb4:polymer-resource-pack:0.6.0-rc.1+1.20.2-rc2')
-	modLocalRuntime 'eu.pb4:polymer-autohost:0.6.0-rc.1+1.20.2-rc2'
+	modImplementation include('xyz.nucleoid:server-translations-api:2.2.0+1.20.3-rc1')
+	modImplementation include('eu.pb4:polymer-core:0.7.0+1.20.3-rc1')
+	modImplementation include('eu.pb4:polymer-virtual-entity:0.7.0+1.20.3-rc1')
+	modImplementation include('eu.pb4:polymer-resource-pack:0.7.0+1.20.3-rc1')
+	modLocalRuntime 'eu.pb4:polymer-autohost:0.7.0+1.20.3-rc1'
 	modImplementation include("eu.pb4:sgui:1.3.0+1.20.2")
-	modImplementation include("eu.pb4:placeholder-api:2.2.0+1.20.2")
+	modImplementation include("eu.pb4:placeholder-api:2.3.0+1.20.3")
 	modImplementation include("eu.pb4:common-protection-api:1.0.0")
 	modImplementation include("eu.pb4:common-economy-api:1.1.1")
 	modImplementation include("me.lucko:fabric-permissions-api:0.2-SNAPSHOT")
diff --git a/gradle.properties b/gradle.properties
index ae5df71..9189f00 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -3,14 +3,14 @@ org.gradle.jvmargs=-Xmx1G
 
 # Fabric Properties
 	# check these on https://fabricmc.net/develop
-	minecraft_version=1.20.2-rc2
-	yarn_mappings=1.20.2-rc2+build.1
-	loader_version=0.14.21
+	minecraft_version=1.20.3-rc1
+	yarn_mappings=1.20.3-rc1+build.1
+	loader_version=0.15.0
 
 # Mod Properties
-	mod_version = 1.4.0+1.20.2
+	mod_version = 1.5.0+1.20.3
 	maven_group = eu.pb4
 	archives_base_name = universal_shops
 
 # Dependencies
-fabric_version=0.89.0+1.20.2
+fabric_version=0.91.1+1.20.3
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index ae04661..e411586 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/src/main/java/eu/pb4/universalshops/gui/ExtraGui.java b/src/main/java/eu/pb4/universalshops/gui/ExtraGui.java
index 40fc2ac..32718d2 100644
--- a/src/main/java/eu/pb4/universalshops/gui/ExtraGui.java
+++ b/src/main/java/eu/pb4/universalshops/gui/ExtraGui.java
@@ -40,7 +40,7 @@ default boolean hasTexture() {
     }
 
     static boolean hasTexture(ServerPlayerEntity player) {
-        return PolymerResourcePackUtils.hasPack(player) || PolymerServerNetworking.getMetadata(player.networkHandler, UniversalShopsMod.HELLO_PACKET, NbtInt.TYPE) != null;
+        return PolymerResourcePackUtils.hasMainPack(player) || PolymerServerNetworking.getMetadata(player.networkHandler, UniversalShopsMod.HELLO_PACKET, NbtInt.TYPE) != null;
     }
 
     static MutableText texture(ServerPlayerEntity player, Text possibleTexture) {
diff --git a/src/main/java/eu/pb4/universalshops/registry/TradeShopBlock.java b/src/main/java/eu/pb4/universalshops/registry/TradeShopBlock.java
index 0564aa0..491f08e 100644
--- a/src/main/java/eu/pb4/universalshops/registry/TradeShopBlock.java
+++ b/src/main/java/eu/pb4/universalshops/registry/TradeShopBlock.java
@@ -1,5 +1,8 @@
 package eu.pb4.universalshops.registry;
 
+import com.mojang.serialization.Codec;
+import com.mojang.serialization.MapCodec;
+import com.mojang.serialization.codecs.RecordCodecBuilder;
 import eu.pb4.polymer.core.api.block.PolymerHeadBlock;
 import net.fabricmc.fabric.api.block.BlockAttackInteractionAware;
 import net.minecraft.block.*;
@@ -27,6 +30,11 @@ public class TradeShopBlock extends BlockWithEntity implements PolymerHeadBlock,
     public static Property<Direction> ATTACHED = EnumProperty.of("attachment", Direction.class, (x) -> x != Direction.UP);
     public final boolean isAdmin;
 
+    public static final MapCodec<TradeShopBlock> CODEC = RecordCodecBuilder.mapCodec(instance -> instance.group(
+            Codec.BOOL.fieldOf("is_admin").forGetter(x -> x.isAdmin),
+            createSettingsCodec()
+    ).apply(instance, TradeShopBlock::new));
+
     protected TradeShopBlock(boolean isAdmin, Settings settings) {
         super(settings);
         this.isAdmin = isAdmin;
@@ -131,4 +139,9 @@ public boolean onAttackInteraction(BlockState state, World world, BlockPos pos,
 
         return true;
     }
+
+    @Override
+    protected MapCodec<? extends BlockWithEntity> getCodec() {
+        return CODEC;
+    }
 }