diff --git a/build.gradle b/build.gradle
index 63ebf1a36..67a6b8a23 100644
--- a/build.gradle
+++ b/build.gradle
@@ -19,7 +19,7 @@ plugins {
 def ENV = System.getenv()
 
 class Globals {
-	static def baseVersion = "0.34.2"
+	static def baseVersion = "0.34.3"
 	static def mcVersion = "21w18a"
 	static def yarnVersion = "+build.3"
 	static def loaderVersion = "0.10.5+build.213"
diff --git a/fabric-networking-api-v1/build.gradle b/fabric-networking-api-v1/build.gradle
index 1c5a42e45..c7364f921 100644
--- a/fabric-networking-api-v1/build.gradle
+++ b/fabric-networking-api-v1/build.gradle
@@ -1,5 +1,5 @@
 archivesBaseName = "fabric-networking-api-v1"
-version = getSubprojectVersion(project, "1.0.8")
+version = getSubprojectVersion(project, "1.0.9")
 
 moduleDependencies(project, [
 		'fabric-api-base'
diff --git a/fabric-networking-api-v1/src/main/java/net/fabricmc/fabric/mixin/networking/ClientConnectionMixin.java b/fabric-networking-api-v1/src/main/java/net/fabricmc/fabric/mixin/networking/ClientConnectionMixin.java
index ee72347f8..02928dda8 100644
--- a/fabric-networking-api-v1/src/main/java/net/fabricmc/fabric/mixin/networking/ClientConnectionMixin.java
+++ b/fabric-networking-api-v1/src/main/java/net/fabricmc/fabric/mixin/networking/ClientConnectionMixin.java
@@ -85,7 +85,9 @@ abstract class ClientConnectionMixin implements ChannelInfoHolder {
 
 	@Inject(method = "channelInactive", at = @At("HEAD"))
 	private void handleDisconnect(ChannelHandlerContext channelHandlerContext, CallbackInfo ci) throws Exception {
-		((NetworkHandlerExtensions) packetListener).getAddon().handleDisconnect();
+		if (packetListener instanceof NetworkHandlerExtensions) { // not the case for client/server query
+			((NetworkHandlerExtensions) packetListener).getAddon().handleDisconnect();
+		}
 	}
 
 	@Override