diff --git a/Cargo.toml b/Cargo.toml
index a95b606..c7bc7bc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cel-eval"
-version = "0.1.2"
+version = "0.1.3"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.htmlž
diff --git a/src/cel.udl b/src/cel.udl
index 5111752..1e88eea 100644
--- a/src/cel.udl
+++ b/src/cel.udl
@@ -1,4 +1,4 @@
-[Trait]
+[Trait, WithForeign]
 interface HostContext {
    [Async]
    string computed_property(string name, string args);