diff --git a/src/main/java/org/codehaus/plexus/archiver/zip/ConcurrentJarCreator.java b/src/main/java/org/codehaus/plexus/archiver/zip/ConcurrentJarCreator.java
index 4e702daa8..5610037f9 100644
--- a/src/main/java/org/codehaus/plexus/archiver/zip/ConcurrentJarCreator.java
+++ b/src/main/java/org/codehaus/plexus/archiver/zip/ConcurrentJarCreator.java
@@ -121,6 +121,7 @@ public void writeTo(ZipArchiveOutputStream targetStream) throws IOException, Exe
         long startAt = System.currentTimeMillis();
         targetStream.close();
         zipCloseElapsed = System.currentTimeMillis() - startAt;
+        metaInfDir.close();
         manifest.close();
         directories.close();
         synchronousEntries.close();