diff --git a/src/pixelator/report/models/annotate.py b/src/pixelator/report/models/annotate.py
index 9af64129..94184808 100644
--- a/src/pixelator/report/models/annotate.py
+++ b/src/pixelator/report/models/annotate.py
@@ -25,14 +25,14 @@ class AnnotateSampleReport(SampleReport):
         description="The fraction of pixels (A and B pixels) in the largest component.",
     )
 
-    fraction_potential_doublets: float = pydantic.Field(
+    fraction_potential_doublets: float | None = pydantic.Field(
         description=(
             "The fraction of components that appear to consist of multiple "
             "parts by the community detection algorithm."
         ),
     )
 
-    n_edges_to_split_potential_doublets: int = pydantic.Field(
+    n_edges_to_split_potential_doublets: int | None = pydantic.Field(
         description=(
             "The total number of edges that need to be removed to split the "
             "potential doublets into their sub-communities."