diff --git a/cache/src/main/kotlin/org/openrs2/cache/DiskStoreZipWriter.kt b/cache/src/main/kotlin/org/openrs2/cache/DiskStoreZipWriter.kt
index 9f19aae5..47cb5961 100644
--- a/cache/src/main/kotlin/org/openrs2/cache/DiskStoreZipWriter.kt
+++ b/cache/src/main/kotlin/org/openrs2/cache/DiskStoreZipWriter.kt
@@ -42,6 +42,9 @@ public class DiskStoreZipWriter(
 
     init {
         out.setLevel(level)
+
+        out.putNextEntry(createZipEntry(""))
+
         out.putNextEntry(createZipEntry("main_file_cache.dat2"))
         out.write(zeroBlock)
     }
diff --git a/cache/src/main/kotlin/org/openrs2/cache/FlatFileStoreTarWriter.kt b/cache/src/main/kotlin/org/openrs2/cache/FlatFileStoreTarWriter.kt
index 3431ac16..9f4246e8 100644
--- a/cache/src/main/kotlin/org/openrs2/cache/FlatFileStoreTarWriter.kt
+++ b/cache/src/main/kotlin/org/openrs2/cache/FlatFileStoreTarWriter.kt
@@ -24,6 +24,11 @@ public class FlatFileStoreTarWriter(
 ) : Store {
     private val timestamp = Date.from(timestamp)
 
+    init {
+        out.putArchiveEntry(createTarEntry("", size = 0))
+        out.closeArchiveEntry()
+    }
+
     private fun createTarEntry(name: String, size: Int): TarArchiveEntry {
         val entry = TarArchiveEntry(prefix + name)
         entry.modTime = timestamp
diff --git a/cache/src/test/resources/org/openrs2/cache/disk-store-zip/cache.zip b/cache/src/test/resources/org/openrs2/cache/disk-store-zip/cache.zip
index 1eb38c58..c3eb90de 100644
Binary files a/cache/src/test/resources/org/openrs2/cache/disk-store-zip/cache.zip and b/cache/src/test/resources/org/openrs2/cache/disk-store-zip/cache.zip differ
diff --git a/cache/src/test/resources/org/openrs2/cache/flat-file-store-tar/cache.tar b/cache/src/test/resources/org/openrs2/cache/flat-file-store-tar/cache.tar
index f972b2b5..a16ba38d 100644
Binary files a/cache/src/test/resources/org/openrs2/cache/flat-file-store-tar/cache.tar and b/cache/src/test/resources/org/openrs2/cache/flat-file-store-tar/cache.tar differ