diff --git a/loopy/version.py b/loopy/version.py
index 6cbbc59e17b1e6940a1c3247f1bf7b60d5a0ef61..2ade5ba548b79cad3103bd52f32bbc1447537486 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 = "v21-islpy%s" % _islpy_version
+DATA_MODEL_VERSION = "v22-islpy%s" % _islpy_version