diff --git a/loopy/version.py b/loopy/version.py
index bb2181bfa453a39ab4fb63c3e067de9dea4ab98e..f5384a49fe74c585af21a4cd2e6a31a52a1292e6 100644
--- a/loopy/version.py
+++ b/loopy/version.py
@@ -32,4 +32,4 @@ except ImportError:
 else:
     _islpy_version = islpy.version.VERSION_TEXT
 
-DATA_MODEL_VERSION = "v55-islpy%s" % _islpy_version
+DATA_MODEL_VERSION = "v56-islpy%s" % _islpy_version