diff --git a/container/Cargo.toml b/container/Cargo.toml
index 470172198..88d2ef563 100644
--- a/container/Cargo.toml
+++ b/container/Cargo.toml
@@ -7,5 +7,5 @@ license = "MIT"
 
 [dependencies]
 columnation = { git = "https://github.com/frankmcsherry/columnation" }
-flatcontainer = "0.4"
+flatcontainer = "0.5"
 serde = { version = "1.0"}
diff --git a/timely/src/order.rs b/timely/src/order.rs
index e9050b3f4..982724255 100644
--- a/timely/src/order.rs
+++ b/timely/src/order.rs
@@ -191,10 +191,11 @@ mod product {
     }
 
     pub mod flatcontainer {
-        use timely_container::flatcontainer::{Containerized, IntoOwned, Push, Region, ReserveItems};
+        use timely_container::flatcontainer::{IntoOwned, Push, Region, RegionPreference, ReserveItems};
         use super::Product;
 
-        impl<TO: Containerized, TI: Containerized> Containerized for Product<TO, TI> {
+        impl<TO: RegionPreference, TI: RegionPreference> RegionPreference for Product<TO, TI> {
+            type Owned = Product<TO::Owned, TI::Owned>;
             type Region = ProductRegion<TO::Region, TI::Region>;
         }