diff --git a/gradle.properties b/gradle.properties
index a945a2e..d986998 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -3,4 +3,4 @@
 org.gradle.jvmargs=-Xmx3G
 org.gradle.daemon=false
 
-mod_version=1.20.1-1.3.4
\ No newline at end of file
+mod_version=1.20.1-1.3.5
\ No newline at end of file
diff --git a/src/main/java/vip/fubuki/playersync/PlayerSync.java b/src/main/java/vip/fubuki/playersync/PlayerSync.java
index ebd7c52..6616b67 100644
--- a/src/main/java/vip/fubuki/playersync/PlayerSync.java
+++ b/src/main/java/vip/fubuki/playersync/PlayerSync.java
@@ -130,11 +130,13 @@ public class PlayerSync {
         }
 
         // Create backpack_data table
-        JDBCsetUp.executeUpdate(
-                "CREATE TABLE IF NOT EXISTS " + dbName + ".backpack_data (" +
-                        "uuid CHAR(36) NOT NULL, backpack_nbt MEDIUMBLOB, PRIMARY KEY (uuid)" +
-                        ");", 1
-        );
+        if(ModList.get().isLoaded("sophisticatedbackpacks")){
+            JDBCsetUp.executeUpdate(
+                    "CREATE TABLE IF NOT EXISTS " + dbName + ".backpack_data (" +
+                            "uuid CHAR(36) NOT NULL, backpack_nbt MEDIUMBLOB, PRIMARY KEY (uuid)" +
+                            ");", 1
+            );
+        }
 
         // ----- NEW BLOCK: Schema Update for backpack_data and player_data -----
         // Check if backpack_data table has the 'uuid' column
diff --git a/src/main/java/vip/fubuki/playersync/sync/ModsSupport.java b/src/main/java/vip/fubuki/playersync/sync/ModsSupport.java
index fbcac22..273a70c 100644
--- a/src/main/java/vip/fubuki/playersync/sync/ModsSupport.java
+++ b/src/main/java/vip/fubuki/playersync/sync/ModsSupport.java
@@ -6,6 +6,7 @@ import net.minecraft.nbt.NbtUtils;
 import net.minecraft.world.item.ItemStack;
 import net.minecraftforge.common.util.LazyOptional;
 import net.minecraftforge.fml.ModList;
+import vip.fubuki.playersync.PlayerSync;
 import vip.fubuki.playersync.util.JDBCsetUp;
 import vip.fubuki.playersync.util.LocalJsonUtil;
 
@@ -13,10 +14,16 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.HashMap;
 import java.util.Map;
+
 import top.theillusivec4.curios.api.CuriosApi;
 import top.theillusivec4.curios.api.type.capability.ICuriosItemHandler;
 import top.theillusivec4.curios.api.type.inventory.ICurioStacksHandler;
 import top.theillusivec4.curios.api.type.inventory.IDynamicStackHandler;
+import java.util.Optional;
+import java.util.UUID;
+
+import static vip.fubuki.playersync.sync.VanillaSync.deserializeString;
+
 
 public class ModsSupport {
 
@@ -90,6 +97,42 @@ public class ModsSupport {
                 StoreCurios(player, true);
             }
         }
+        if(ModList.get().isLoaded("sophisticatedbackpacks")){
+            // --- Begin Backpack Data Restore ---
+            PlayerSync.LOGGER.info("Restoring backpack data for player " + player.getUUID());
+            net.p3pp3rf1y.sophisticatedbackpacks.util.PlayerInventoryProvider.get().runOnBackpacks(player, (ItemStack backpackItem, String handler, String identifier, int slot) -> {
+                backpackItem.getCapability(net.p3pp3rf1y.sophisticatedbackpacks.api.CapabilityBackpackWrapper.getCapabilityInstance())
+                        .ifPresent(wrapper -> {
+                            // Retrieve the contents UUID from the backpack's NBT using NBTHelper
+                            Optional<UUID> uuidOpt = net.p3pp3rf1y.sophisticatedcore.util.NBTHelper.getUniqueId(wrapper.getBackpack(), "contentsUuid");
+                            if (uuidOpt.isPresent()) {
+                                UUID contentsUuid = uuidOpt.get();
+                                try {
+                                    JDBCsetUp.QueryResult qrBackpack = JDBCsetUp.executeQuery("SELECT backpack_nbt FROM backpack_data WHERE uuid='" + contentsUuid.toString() + "'");
+                                    ResultSet rsBackpack = qrBackpack.resultSet();
+                                    if (rsBackpack.next()) {
+                                        String serialized = rsBackpack.getString("backpack_nbt");
+                                        String nbtString = deserializeString(serialized);
+                                        CompoundTag backpackNbt = NbtUtils.snbtToStructure(nbtString);
+                                        // Update BackpackStorage with the retrieved NBT
+                                        net.p3pp3rf1y.sophisticatedbackpacks.backpack.BackpackStorage.get().setBackpackContents(contentsUuid, backpackNbt);
+                                        PlayerSync.LOGGER.info("Restored backpack data for UUID " + contentsUuid);
+                                    }
+                                    rsBackpack.close();
+                                    qrBackpack.connection().close();
+                                } catch (SQLException e) {
+                                    PlayerSync.LOGGER.error("Error restoring backpack data for UUID " + contentsUuid, e);
+                                } catch (CommandSyntaxException e) {
+                                    throw new RuntimeException(e);
+                                }
+                            } else {
+                                PlayerSync.LOGGER.warn("Backpack item in slot " + slot + " has no contentsUuid during restore");
+                            }
+                        });
+                return false;
+            });
+            // --- End Backpack Data Restore ---
+        }
     }
 
     /**
diff --git a/src/main/java/vip/fubuki/playersync/sync/VanillaSync.java b/src/main/java/vip/fubuki/playersync/sync/VanillaSync.java
index 1440115..41ceb77 100644
--- a/src/main/java/vip/fubuki/playersync/sync/VanillaSync.java
+++ b/src/main/java/vip/fubuki/playersync/sync/VanillaSync.java
@@ -167,41 +167,6 @@ public class VanillaSync {
         modsSupport.onPlayerJoin(serverPlayer);
         serverPlayer.addTag("player_synced");
 
-        // --- Begin Backpack Data Restore ---
-        PlayerSync.LOGGER.info("Restoring backpack data for player " + player_uuid);
-        net.p3pp3rf1y.sophisticatedbackpacks.util.PlayerInventoryProvider.get().runOnBackpacks(serverPlayer, (ItemStack backpackItem, String handler, String identifier, int slot) -> {
-            backpackItem.getCapability(net.p3pp3rf1y.sophisticatedbackpacks.api.CapabilityBackpackWrapper.getCapabilityInstance())
-                    .ifPresent(wrapper -> {
-                        // Retrieve the contents UUID from the backpack's NBT using NBTHelper
-                        Optional<UUID> uuidOpt = net.p3pp3rf1y.sophisticatedcore.util.NBTHelper.getUniqueId(wrapper.getBackpack(), "contentsUuid");
-                        if (uuidOpt.isPresent()) {
-                            UUID contentsUuid = uuidOpt.get();
-                            try {
-                                JDBCsetUp.QueryResult qrBackpack = JDBCsetUp.executeQuery("SELECT backpack_nbt FROM backpack_data WHERE uuid='" + contentsUuid.toString() + "'");
-                                ResultSet rsBackpack = qrBackpack.resultSet();
-                                if (rsBackpack.next()) {
-                                    String serialized = rsBackpack.getString("backpack_nbt");
-                                    String nbtString = deserializeString(serialized);
-                                    CompoundTag backpackNbt = NbtUtils.snbtToStructure(nbtString);
-                                    // Update BackpackStorage with the retrieved NBT
-                                    net.p3pp3rf1y.sophisticatedbackpacks.backpack.BackpackStorage.get().setBackpackContents(contentsUuid, backpackNbt);
-                                    PlayerSync.LOGGER.info("Restored backpack data for UUID " + contentsUuid);
-                                }
-                                rsBackpack.close();
-                                qrBackpack.connection().close();
-                            } catch (SQLException e) {
-                                PlayerSync.LOGGER.error("Error restoring backpack data for UUID " + contentsUuid, e);
-                            } catch (CommandSyntaxException e) {
-                                throw new RuntimeException(e);
-                            }
-                        } else {
-                            PlayerSync.LOGGER.warn("Backpack item in slot " + slot + " has no contentsUuid during restore");
-                        }
-                    });
-            return false;
-        });
-        // --- End Backpack Data Restore ---
-
         rs2.close();
     }