diff --git a/Cargo.toml b/Cargo.toml
index 75b3a4215d44c41b9c752867d3a21c40acc63490..d58c8fb0fef0baada4efbc64fea82a34276f5083 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,7 @@ authors = [
 edition = "2018"
 
 [dependencies]
+# hibitset = "0.6.2"
 
 # runtime stuff
 getrandom = "0.1.14" # tiny crate. used to guess controller-id