diff --git a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/Protocol1_20_3To1_20_5.java b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/Protocol1_20_3To1_20_5.java
index 5bda98e2..91e257be 100644
--- a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/Protocol1_20_3To1_20_5.java
+++ b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/Protocol1_20_3To1_20_5.java
@@ -125,6 +125,14 @@ public final class Protocol1_20_3To1_20_5 extends BackwardsProtocol<ClientboundP
         registerClientbound(ClientboundPackets1_20_5.STORE_COOKIE, null, this::handleStoreCookie);
         registerClientbound(ClientboundPackets1_20_5.TRANSFER, null, this::handleTransfer);
 
+        registerClientbound(ClientboundConfigurationPackets1_20_5.SELECT_KNOWN_PACKS, null, wrapper -> {
+            wrapper.cancel();
+
+            final PacketWrapper response = wrapper.create(ServerboundConfigurationPackets1_20_5.SELECT_KNOWN_PACKS);
+            response.write(Type.VAR_INT, 0); // Empty, we don't know anything
+            response.sendToServer(Protocol1_20_3To1_20_5.class);
+        });
+
         cancelClientbound(ClientboundPackets1_20_5.DEBUG_SAMPLE);
     }
 
diff --git a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/rewriter/BlockItemPacketRewriter1_20_5.java b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/rewriter/BlockItemPacketRewriter1_20_5.java
index abed6d2e..1fa547d3 100644
--- a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/rewriter/BlockItemPacketRewriter1_20_5.java
+++ b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/rewriter/BlockItemPacketRewriter1_20_5.java
@@ -23,6 +23,7 @@ import com.viaversion.viaversion.api.minecraft.Particle;
 import com.viaversion.viaversion.api.type.Type;
 import com.viaversion.viaversion.api.type.types.chunk.ChunkType1_20_2;
 import com.viaversion.viaversion.api.type.types.version.Types1_20_3;
+import com.viaversion.viaversion.api.type.types.version.Types1_20_5;
 import com.viaversion.viaversion.protocols.protocol1_20_3to1_20_2.packet.ServerboundPacket1_20_3;
 import com.viaversion.viaversion.protocols.protocol1_20_3to1_20_2.packet.ServerboundPackets1_20_3;
 import com.viaversion.viaversion.protocols.protocol1_20_3to1_20_2.rewriter.RecipeRewriter1_20_3;
@@ -69,7 +70,7 @@ public final class BlockItemPacketRewriter1_20_5 extends ItemRewriter<Clientboun
             wrapper.passthrough(Type.INT); // Particle Count
 
             // Move it to the beginning, move out arguments here
-            final Particle particle = wrapper.read(Types1_20_3.PARTICLE);
+            final Particle particle = wrapper.read(Types1_20_5.PARTICLE);
             rewriteParticle(particle);
             wrapper.set(Type.VAR_INT, 0, particle.getId());
             for (final Particle.ParticleData<?> argument : particle.getArguments()) {
@@ -93,10 +94,8 @@ public final class BlockItemPacketRewriter1_20_5 extends ItemRewriter<Clientboun
             wrapper.passthrough(Type.FLOAT); // Knockback Z
             wrapper.passthrough(Type.VAR_INT); // Block interaction type
 
-            final Particle smallExplosionParticle = wrapper.passthrough(Types1_20_3.PARTICLE);
-            final Particle largeExplosionParticle = wrapper.passthrough(Types1_20_3.PARTICLE);
-            protocol.getEntityRewriter().rewriteParticle(smallExplosionParticle);
-            protocol.getEntityRewriter().rewriteParticle(largeExplosionParticle);
+            protocol.getEntityRewriter().rewriteParticle(wrapper, Types1_20_5.PARTICLE, Types1_20_3.PARTICLE); // Small explosion particle
+            protocol.getEntityRewriter().rewriteParticle(wrapper, Types1_20_5.PARTICLE, Types1_20_3.PARTICLE); // Large explosion particle
 
             int soundId = wrapper.read(Type.VAR_INT) - 1;
             if (soundId == -1) {
diff --git a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/rewriter/EntityPacketRewriter1_20_5.java b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/rewriter/EntityPacketRewriter1_20_5.java
index e1047d2f..a25d9e87 100644
--- a/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/rewriter/EntityPacketRewriter1_20_5.java
+++ b/common/src/main/java/com/viaversion/viabackwards/protocol/protocol1_20_3to1_20_5/rewriter/EntityPacketRewriter1_20_5.java
@@ -17,11 +17,13 @@
  */
 package com.viaversion.viabackwards.protocol.protocol1_20_3to1_20_5.rewriter;
 
+import com.google.common.base.Preconditions;
 import com.viaversion.viabackwards.api.rewriters.EntityRewriter;
 import com.viaversion.viabackwards.protocol.protocol1_20_3to1_20_5.Protocol1_20_3To1_20_5;
 import com.viaversion.viabackwards.protocol.protocol1_20_3to1_20_5.storage.RegistryDataStorage;
 import com.viaversion.viabackwards.protocol.protocol1_20_3to1_20_5.storage.SecureChatStorage;
 import com.viaversion.viaversion.api.data.entity.DimensionData;
+import com.viaversion.viaversion.api.data.entity.TrackedEntity;
 import com.viaversion.viaversion.api.minecraft.RegistryEntry;
 import com.viaversion.viaversion.api.minecraft.entities.EntityType;
 import com.viaversion.viaversion.api.minecraft.entities.EntityTypes1_20_5;
@@ -86,6 +88,8 @@ public final class EntityPacketRewriter1_20_5 extends EntityRewriter<Clientbound
                         final String[] keys = new String[entries.length];
                         for (int i = 0; i < entries.length; i++) {
                             final RegistryEntry entry = entries[i];
+                            Preconditions.checkNotNull(entry.tag(), "Server unexpectedly sent null dimension data for " + entry.key());
+
                             final String dimensionKey = Key.stripMinecraftNamespace(entry.key());
                             dimensionDataMap.put(dimensionKey, new DimensionDataImpl(i, (CompoundTag) entry.tag()));
                             keys[i] = dimensionKey;
@@ -101,6 +105,8 @@ public final class EntityPacketRewriter1_20_5 extends EntityRewriter<Clientbound
                     registryTag.put("value", entriesTag);
                     for (int i = 0; i < entries.length; i++) {
                         final RegistryEntry entry = entries[i];
+                        Preconditions.checkNotNull(entry.tag(), "Server unexpectedly sent null registry data entry for " + entry.key());
+
                         final CompoundTag entryCompoundTag = new CompoundTag();
                         entryCompoundTag.putString("name", entry.key());
                         entryCompoundTag.putInt("id", i);
@@ -174,13 +180,25 @@ public final class EntityPacketRewriter1_20_5 extends EntityRewriter<Clientbound
         });
 
         protocol.registerClientbound(ClientboundPackets1_20_5.ENTITY_PROPERTIES, wrapper -> {
-            wrapper.passthrough(Type.VAR_INT); // Entity ID
+            final int entityId = wrapper.passthrough(Type.VAR_INT);
+            final TrackedEntity entity = tracker(wrapper.user()).entity(entityId);
+            if (entity == null || !entity.entityType().isOrHasParent(EntityTypes1_20_5.LIVINGENTITY)) {
+                // Cannot add attributes to base entities in old version
+                wrapper.cancel();
+                return;
+            }
 
             final int size = wrapper.passthrough(Type.VAR_INT);
             int newSize = size;
             for (int i = 0; i < size; i++) {
                 // From a registry int ID to a string
-                final int id = protocol.getMappingData().getAttributeMappings().getNewId(wrapper.read(Type.VAR_INT));
+                int id = protocol.getMappingData().getAttributeMappings().getNewId(wrapper.read(Type.VAR_INT));
+                final String attribute = AttributeMappings.attribute(id);
+                if ("horse.jump_strength".equals(attribute)) {
+                    // Jump strength only applies to horses in old versions
+                    id = -1;
+                }
+
                 if (id == -1) {
                     // Remove new attributes from the list
                     newSize--;
@@ -195,7 +213,6 @@ public final class EntityPacketRewriter1_20_5 extends EntityRewriter<Clientbound
                     continue;
                 }
 
-                final String attribute = AttributeMappings.attribute(id);
                 wrapper.write(Type.STRING, attribute);
 
                 wrapper.passthrough(Type.DOUBLE); // Base
diff --git a/common/src/main/resources/assets/viabackwards/data/mappings-1.20.5to1.20.3.nbt b/common/src/main/resources/assets/viabackwards/data/mappings-1.20.5to1.20.3.nbt
index b5ed9cef..41c06c59 100644
Binary files a/common/src/main/resources/assets/viabackwards/data/mappings-1.20.5to1.20.3.nbt and b/common/src/main/resources/assets/viabackwards/data/mappings-1.20.5to1.20.3.nbt differ
diff --git a/gradle.properties b/gradle.properties
index e1c7b3f3..631513d6 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,4 +1,4 @@
-projectVersion=4.10.0-24w05b-SNAPSHOT
+projectVersion=4.10.0-24w06a-SNAPSHOT
 
 # Smile emoji
 mcVersions=1.20.4, 1.20.3, 1.20.2, 1.20.1, 1.20, 1.19.4, 1.19.3, 1.19.2, 1.19.1, 1.19, 1.18.2, 1.18.1, 1.18, 1.17.1, 1.17, 1.16.5, 1.16.4, 1.16.3, 1.16.2, 1.16.1, 1.16, 1.15.2, 1.15.1, 1.15, 1.14.4, 1.14.3, 1.14.2, 1.14.1, 1.14, 1.13.2, 1.13.1, 1.13, 1.12.2, 1.12.1, 1.12, 1.11.2, 1.11.1, 1.11, 1.10.2, 1.10.1, 1.10
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 37ea0805..137b8651 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -3,7 +3,7 @@ metadata.format.version = "1.1"
 [versions]
 
 # ViaVersion
-viaver = "4.10.0-24w05a-SNAPSHOT"
+viaver = "4.10.0-24w06a-SNAPSHOT"
 
 # Common provided
 netty = "4.0.20.Final"