diff --git a/code-samples/serving/cloudevents/cloudevents-rust/Cargo.lock b/code-samples/serving/cloudevents/cloudevents-rust/Cargo.lock
index 7ee70f863..2103c0a4f 100644
--- a/code-samples/serving/cloudevents/cloudevents-rust/Cargo.lock
+++ b/code-samples/serving/cloudevents/cloudevents-rust/Cargo.lock
@@ -1733,9 +1733,9 @@ checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 
 [[package]]
 name = "smallvec"
-version = "1.4.0"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7cb5678e1615754284ec264d9bb5b4c27d2018577fd90ac0ceb578591ed5ee4"
+checksum = "f2dd574626839106c320a323308629dcb1acfc96e32a8cba364ddc61ac23ee83"
 
 [[package]]
 name = "snafu"