diff --git a/constellations/__init__.py b/constellations/__init__.py
index 58a761f..6240771 100644
--- a/constellations/__init__.py
+++ b/constellations/__init__.py
@@ -1,3 +1,3 @@
 _program = "constellations"
-__version__ = "v0.0.10"
+__version__ = "v0.0.11"
 
diff --git a/constellations/definitions/cB.1.617.2.json b/constellations/definitions/cB.1.617.2.json
index 9ce4725..9c2c040 100644
--- a/constellations/definitions/cB.1.617.2.json
+++ b/constellations/definitions/cB.1.617.2.json
@@ -12,6 +12,10 @@
             "AY.2"
         ],
 	    "mrca_lineage": "B.1.617.2",
+        "incompatible_lineage_calls": [
+            "AY.1",
+            "AY.2"
+        ],
         "PHE_label": "VOC-21APR-02",
         "WHO_label": "Delta",
         "representative_genome": ""