diff --git a/javapackages-tools.spec b/javapackages-tools.spec
index 15175c9..9d02ba8 100644
--- a/javapackages-tools.spec
+++ b/javapackages-tools.spec
@@ -51,6 +51,7 @@ Patch3:         0001-Make-maven_depmap-order-of-aliases-reproducible.patch
 Patch4:         0002-Do-not-bomb-on-relativePath-construct.patch
 #PATCH-FIX-UPSTREAM: Sort exclusions when writing out metadata
 Patch5:         0003-Reproducible-exclusions-order-in-maven-metadata.patch
+Patch6:         metadata-artifact.patch
 BuildRequires:  asciidoc
 BuildRequires:  fdupes
 BuildRequires:  perl
diff --git a/metadata-artifact.patch b/metadata-artifact.patch
new file mode 100644
index 0000000..8cd3946
--- /dev/null
+++ b/metadata-artifact.patch
@@ -0,0 +1,13 @@
+--- a/python/javapackages/metadata/artifact.py
++++ b/python/javapackages/metadata/artifact.py
+@@ -52,8 +52,8 @@ class MetadataArtifact(ObjectBinding):
+               'compatVersions', 'dependencies']
+     defaults = {'extension': 'jar'}
+     types = {'compatVersions': set(['version']),
+-             'aliases': set([MetadataAlias]),
+-             'dependencies': set([MetadataDependency]),
++             'aliases': list([MetadataAlias]),
++             'dependencies': list([MetadataDependency]),
+              'properties': dict}
+ 
+     def __init__(self, *args, **kwargs):