diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..b4726a8
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "isoparser"]
+	path = isoparser
+	url = https://github.com/barneygale/isoparser.git
diff --git a/isoparser b/isoparser
new file mode 160000
index 0000000..6f18329
--- /dev/null
+++ b/isoparser
@@ -0,0 +1 @@
+Subproject commit 6f18329bc180db50177f0793827066036ee4aea6
diff --git a/isoparser.patch b/isoparser.patch
new file mode 100644
index 0000000..784e26c
--- /dev/null
+++ b/isoparser.patch
@@ -0,0 +1,13 @@
+diff --git a/isoparser/record.py b/isoparser/record.py
+index 4cf19f3..a09160d 100644
+--- a/isoparser/record.py
++++ b/isoparser/record.py
+@@ -47,7 +47,7 @@ class Record(object):
+ 
+         self.embedded_susp_entries = susp_entries
+ 
+-        assert source.cursor <= target
++        #assert source.cursor <= target
+         source.unpack_raw(target - source.cursor)
+ 
+     def __repr__(self):