diff --git a/gradle.properties b/gradle.properties
index 3aaae1730..c227761ac 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -16,7 +16,7 @@ fabric_version = 0.91.0+1.20.1
 
 # Mappings
 # https://lambdaurora.dev/tools/import_quilt.html
-qm_version = 1
+qm_version = 23
 # https://parchmentmc.org/docs/getting-started
 parchment_version = none
 
diff --git a/modules/config/src/main/java/io/github/fabricators_of_create/porting_lib/config/PortingLibConfig.java b/modules/config/src/main/java/io/github/fabricators_of_create/porting_lib/config/PortingLibConfig.java
index f554f234d..a0c087471 100644
--- a/modules/config/src/main/java/io/github/fabricators_of_create/porting_lib/config/PortingLibConfig.java
+++ b/modules/config/src/main/java/io/github/fabricators_of_create/porting_lib/config/PortingLibConfig.java
@@ -4,10 +4,10 @@
 import java.nio.file.FileAlreadyExistsException;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.util.Map;
-import java.util.stream.Collectors;
 
-import net.fabricmc.fabric.api.networking.v1.ServerLoginNetworking;
+import net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents;
+
+import net.minecraft.server.level.ServerPlayer;
 
 import org.slf4j.Logger;
 
@@ -16,23 +16,32 @@
 import net.fabricmc.api.ModInitializer;
 import net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents;
 import net.fabricmc.fabric.api.networking.v1.PacketByteBufs;
-import net.fabricmc.fabric.api.networking.v1.ServerLoginConnectionEvents;
 import net.minecraft.network.FriendlyByteBuf;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.world.level.storage.LevelResource;
 
 public class PortingLibConfig implements ModInitializer {
+	public static final String ID = "porting_lib_config";
 	private static final Logger LOGGER = LogUtils.getLogger();
 	private static final LevelResource SERVERCONFIG = new LevelResource("serverconfig");
 
-	private Path getServerConfigPath(final MinecraftServer server) {
-		final Path serverConfig = server.getWorldPath(SERVERCONFIG);
+	private Path getServerConfigPath(MinecraftServer server) {
+		Path serverConfig = server.getWorldPath(SERVERCONFIG);
 		getOrCreateDirectory(serverConfig, "serverconfig");
 		return serverConfig;
 	}
 
-	public static final ResourceLocation CONFIG_SYNC = new ResourceLocation("porting_lib_config", "config_sync");
+	/**
+	 * The ID for the config sync packet.
+	 */
+	public static final ResourceLocation CONFIG_SYNC = new ResourceLocation(ID, "config_sync");
+	/**
+	 * An event phase for {@link ServerPlayConnectionEvents#JOIN} that comes after config sync.
+	 * If you need to send packets to players on join that depend on config values already being synced,
+	 * register using this phase.
+	 */
+	public static final ResourceLocation AFTER_CONFIG_SYNC = new ResourceLocation(ID, "after_config_sync");
 
 	@Override
 	public void onInitialize() {
@@ -43,22 +52,25 @@ public void onInitialize() {
 			ConfigTracker.INSTANCE.unloadConfigs(ConfigType.SERVER, getServerConfigPath(server));
 		});
 
-		ServerLoginConnectionEvents.QUERY_START.register((handler, server, sender, synchronizer) -> {
-			synchronizer.waitFor(server.submit(() -> {
-				final Map<String, byte[]> configData = ConfigTracker.INSTANCE.configSets().get(ConfigType.SERVER).stream().collect(Collectors.toMap(ModConfig::getFileName, mc -> {
-					try {
-						return Files.readAllBytes(mc.getFullPath());
-					} catch (IOException e) {
-						throw new RuntimeException(e);
-					}
-				}));
-				configData.forEach((key, value) -> {
+		ServerPlayConnectionEvents.JOIN.addPhaseOrdering(CONFIG_SYNC, AFTER_CONFIG_SYNC);
+		ServerPlayConnectionEvents.JOIN.register(CONFIG_SYNC, (handler, sender, server) -> {
+			ServerPlayer player = handler.player;
+			if (server.isSingleplayerOwner(player.getGameProfile()))
+				return; // don't sync to self
+
+			ConfigTracker.INSTANCE.configSets().get(ConfigType.SERVER).forEach(config -> {
+				try {
+					String name = config.getFileName();
+					byte[] data = Files.readAllBytes(config.getFullPath());
+
 					FriendlyByteBuf buf = PacketByteBufs.create();
-					buf.writeUtf(key);
-					buf.writeByteArray(value);
+					buf.writeUtf(name);
+					buf.writeByteArray(data);
 					sender.sendPacket(CONFIG_SYNC, buf);
-				});
-			}));
+				} catch (IOException e) {
+					throw new RuntimeException(e);
+				}
+			});
 		});
 	}
 
diff --git a/modules/config/src/main/java/io/github/fabricators_of_create/porting_lib/config/client/PortingLibConfigClient.java b/modules/config/src/main/java/io/github/fabricators_of_create/porting_lib/config/client/PortingLibConfigClient.java
index 4d78c7bd0..149bcbf19 100644
--- a/modules/config/src/main/java/io/github/fabricators_of_create/porting_lib/config/client/PortingLibConfigClient.java
+++ b/modules/config/src/main/java/io/github/fabricators_of_create/porting_lib/config/client/PortingLibConfigClient.java
@@ -1,24 +1,28 @@
 package io.github.fabricators_of_create.porting_lib.config.client;
 
-import java.util.Optional;
-import java.util.concurrent.CompletableFuture;
-
 import io.github.fabricators_of_create.porting_lib.config.ConfigTracker;
+import io.github.fabricators_of_create.porting_lib.config.ModConfig;
 import io.github.fabricators_of_create.porting_lib.config.PortingLibConfig;
 import net.fabricmc.api.ClientModInitializer;
-import net.fabricmc.fabric.api.client.networking.v1.ClientLoginNetworking;
-import net.minecraft.client.Minecraft;
+import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class PortingLibConfigClient implements ClientModInitializer {
+	private static final Logger logger = LoggerFactory.getLogger(PortingLibConfigClient.class);
+
 	@Override
 	public void onInitializeClient() {
-		ClientLoginNetworking.registerGlobalReceiver(PortingLibConfig.CONFIG_SYNC, (client, handler, buf, listenerAdder) -> {
-			if (!Minecraft.getInstance().isLocalServer()) {
-				String fileName = buf.readUtf();
-				byte[] bytes = buf.readByteArray();
-				Optional.ofNullable(ConfigTracker.INSTANCE.fileMap().get(fileName)).ifPresent(mc-> mc.acceptSyncedConfig(bytes));
+		ClientPlayNetworking.registerGlobalReceiver(PortingLibConfig.CONFIG_SYNC, (client, handler, buf, sender) -> {
+			String name = buf.readUtf();
+			byte[] data = buf.readByteArray();
+			ModConfig config = ConfigTracker.INSTANCE.fileMap().get(name);
+			if (config != null) {
+				config.acceptSyncedConfig(data);
+			} else {
+				logger.warn("Received config data for unknown file {}", name);
 			}
-			return CompletableFuture.completedFuture(null);
 		});
 	}
 }