diff --git a/conda_lock/lockfile/v2prelim/models.py b/conda_lock/lockfile/v2prelim/models.py
index 3138d20e6..edeb797aa 100644
--- a/conda_lock/lockfile/v2prelim/models.py
+++ b/conda_lock/lockfile/v2prelim/models.py
@@ -18,7 +18,7 @@
 
 
 class LockedDependency(BaseLockedDependency):
-    categories: Set[str] = {"main"}
+    categories: Set[str] = set()
 
     def to_v1(self) -> List[LockedDependencyV1]:
         """Convert a v2 dependency into a list of v1 dependencies.