diff --git a/gradle.properties b/gradle.properties
index 3f1116ec..de02c6f9 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -13,7 +13,7 @@ fabric_version=0.100.0+1.21
 
 maven_group = eu.pb4
 
-mod_version = 0.9.3
+mod_version = 0.9.4
 
 minecraft_version_supported = ">=1.20.5-"
 
diff --git a/polymer-virtual-entity/src/main/java/eu/pb4/polymer/virtualentity/mixin/EntityPassengersSetS2CPacketMixin.java b/polymer-virtual-entity/src/main/java/eu/pb4/polymer/virtualentity/mixin/EntityPassengersSetS2CPacketMixin.java
index 58a52e51..db844015 100644
--- a/polymer-virtual-entity/src/main/java/eu/pb4/polymer/virtualentity/mixin/EntityPassengersSetS2CPacketMixin.java
+++ b/polymer-virtual-entity/src/main/java/eu/pb4/polymer/virtualentity/mixin/EntityPassengersSetS2CPacketMixin.java
@@ -51,7 +51,7 @@ public class EntityPassengersSetS2CPacketMixin {
 
     @ModifyArg(method = "write", at = @At(value = "INVOKE", target = "Lnet/minecraft/network/PacketByteBuf;writeIntArray([I)Lnet/minecraft/network/PacketByteBuf;"))
     private int[] addDynamicPassengers(int[] a) {
-        if (this.virtualPassengers.isEmpty()) {
+        if (this.virtualPassengers == null || this.virtualPassengers.isEmpty()) {
             return a;
         }
         var player = PolymerCommonUtils.getPlayerContext();