diff --git a/src/test/java/org/bukkit/support/AbstractTestingBase.java b/src/test/java/org/bukkit/support/AbstractTestingBase.java
index 8dec5490a..e716d13e0 100644
--- a/src/test/java/org/bukkit/support/AbstractTestingBase.java
+++ b/src/test/java/org/bukkit/support/AbstractTestingBase.java
@@ -2,7 +2,6 @@ package org.bukkit.support;
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.util.concurrent.MoreExecutors;
-import java.util.Collections;
 import java.util.List;
 import net.minecraft.SharedConstants;
 import net.minecraft.commands.CommandDispatcher;
@@ -16,6 +15,8 @@ import net.minecraft.server.DispenserRegistry;
 import net.minecraft.server.RegistryLayer;
 import net.minecraft.server.WorldLoader;
 import net.minecraft.server.packs.EnumResourcePackType;
+import net.minecraft.server.packs.repository.ResourcePackLoader;
+import net.minecraft.server.packs.repository.ResourcePackRepository;
 import net.minecraft.server.packs.repository.ResourcePackSourceVanilla;
 import net.minecraft.server.packs.resources.ResourceManager;
 import net.minecraft.world.flag.FeatureFlags;
@@ -43,8 +44,11 @@ public abstract class AbstractTestingBase {
     static {
         SharedConstants.tryDetectVersion();
         DispenserRegistry.bootStrap();
+        // Populate available packs
+        ResourcePackRepository resourceRepository = new ResourcePackRepository(new ResourcePackSourceVanilla());
+        resourceRepository.reload();
         // Set up resource manager
-        ResourceManager resourceManager = new ResourceManager(EnumResourcePackType.SERVER_DATA, Collections.singletonList(new ResourcePackSourceVanilla().getVanillaPack()));
+        ResourceManager resourceManager = new ResourceManager(EnumResourcePackType.SERVER_DATA, resourceRepository.getAvailablePacks().stream().map(ResourcePackLoader::open).toList());
         // add tags and loot tables for unit tests
         LayeredRegistryAccess<RegistryLayer> layers = RegistryLayer.createRegistryAccess();
         layers = WorldLoader.loadAndReplaceLayer(resourceManager, layers, RegistryLayer.WORLDGEN, RegistryDataLoader.WORLDGEN_REGISTRIES);