diff --git a/CHANGELOG.md b/CHANGELOG.md
index e447b1239..1b8d2ccd4 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 - Fixed a crash with the Constructor (raoulvdberge)
 - Fixed Crafting Pattern model (pauljoda)
 - Fixed Quartz Enriched Iron and the block form of it not having an oredictionary entry (raoulvdberge)
+- Fixed crash in storage cache (raoulvdberge)
 
 ### 1.4.1
 - Added Storage Monitor (raoulvdberge)
diff --git a/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/storage/StorageCacheFluid.java b/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/storage/StorageCacheFluid.java
index 36733abd8..6136e90c5 100755
--- a/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/storage/StorageCacheFluid.java
+++ b/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/storage/StorageCacheFluid.java
@@ -11,11 +11,12 @@ import net.minecraftforge.fluids.FluidStack;
 
 import javax.annotation.Nonnull;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 public class StorageCacheFluid implements IStorageCache<FluidStack> {
     private INetworkMaster network;
-    private List<IStorage<FluidStack>> storages = new ArrayList<>();
+    private List<IStorage<FluidStack>> storages = Collections.synchronizedList(new ArrayList<>());
     private IStackList<FluidStack> list = API.instance().createFluidStackList();
 
     public StorageCacheFluid(INetworkMaster network) {
diff --git a/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/storage/StorageCacheItem.java b/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/storage/StorageCacheItem.java
index c6b2fe0ae..6f182f755 100755
--- a/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/storage/StorageCacheItem.java
+++ b/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/storage/StorageCacheItem.java
@@ -11,11 +11,12 @@ import net.minecraft.item.ItemStack;
 
 import javax.annotation.Nonnull;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 public class StorageCacheItem implements IStorageCache<ItemStack> {
     private INetworkMaster network;
-    private List<IStorage<ItemStack>> storages = new ArrayList<>();
+    private List<IStorage<ItemStack>> storages = Collections.synchronizedList(new ArrayList<>());
     private IStackList<ItemStack> list = API.instance().createItemStackList();
 
     public StorageCacheItem(INetworkMaster network) {