diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 19c4041fb7..28eebdf5c3 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -13,5 +13,5 @@
 # limitations under the License.
 
 [toolchain]
-channel = "1.72.0"
+channel = "1.73.0"
 components = ["rustfmt", "clippy"]
diff --git a/src/endpoint.rs b/src/endpoint.rs
index 58ea52ed08..e47e0b2298 100644
--- a/src/endpoint.rs
+++ b/src/endpoint.rs
@@ -125,7 +125,7 @@ impl Ord for Endpoint {
 
 impl PartialOrd for Endpoint {
     fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
-        self.address.partial_cmp(&other.address)
+        Some(self.cmp(other))
     }
 }