diff --git a/Project.toml b/Project.toml
index 716e8834..bd5c2e46 100644
--- a/Project.toml
+++ b/Project.toml
@@ -36,7 +36,7 @@ TransformUtils = "9b8138ad-1b09-5408-aa39-e87ed6d21b63"
 [compat]
 ApproxManifoldProducts = "0.6.2"
 CoordinateTransformations = "0.5, 0.6"
-DistributedFactorGraphs = "0.20"
+DistributedFactorGraphs = "0.20, 0.21"
 Distributions = "0.24, 0.25"
 DocStringExtensions = "0.8, 0.9"
 FileIO = "1"