diff --git a/loopy/version.py b/loopy/version.py
index fd7c66fa249333ecae66c10d0ce919f806d9a884..bb2181bfa453a39ab4fb63c3e067de9dea4ab98e 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 = "v54-islpy%s" % _islpy_version
+DATA_MODEL_VERSION = "v55-islpy%s" % _islpy_version