diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 0583782b4b1..8d9d7fdb3f4 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -570,3 +570,13 @@ cargo-zigbuild clippy --lib --bins --all-features --target x86_64-unknown-linux-
 If it doesn't work, try updating `cargo-zigbuild`
 (`cargo install cargo-zigbuild` or maybe `cargo install cargo-zigbuild --force`)
 or via `homebrew` if it was installed via homebrew.
+
+# Adding new target types
+
+Adding a new target type for mirrord requires changes in:
+
+1. `mirrord-config` crate - parsing the target from the user config;
+2. `mirrord-cli` crate - verifying the user config;
+3. `mirrord-kube` crate - resolving the target to the Kubernetes resource;
+4. `mirrord-operator` crate - defining operator's `ClusterRole`;
+5. `test` crate - testing `mirrord ls` command
diff --git a/changelog.d/+ls-test.internal.md b/changelog.d/+ls-test.internal.md
new file mode 100644
index 00000000000..f8c1eccecd5
--- /dev/null
+++ b/changelog.d/+ls-test.internal.md
@@ -0,0 +1 @@
+Updated `tests::operator::sanity::mirrord_ls` test after adding ReplicaSet support.
diff --git a/tests/src/operator/sanity.rs b/tests/src/operator/sanity.rs
index e9264a3681a..b219539f4f5 100644
--- a/tests/src/operator/sanity.rs
+++ b/tests/src/operator/sanity.rs
@@ -16,7 +16,22 @@ pub async fn mirrord_ls(#[future] service_for_mirrord_ls: KubeService) {
     assert!(res.success());
     let stdout = process.get_stdout().await;
     let targets: Vec<String> = serde_json::from_str(&stdout).unwrap();
-    let re = Regex::new(r"^(pod|deployment|statefulset|cronjob|job)/.+(/container/.+)?$").unwrap();
+
+    let expected_target_types = [
+        "pod",
+        "deployment",
+        "statefulset",
+        "cronjob",
+        "job",
+        "replicaset",
+        "service",
+    ];
+
+    let re = Regex::new(&format!(
+        r"^({})/.+(/container/.+)?$",
+        expected_target_types.join("|")
+    ))
+    .unwrap();
     targets.iter().for_each(|output| {
         assert!(
             re.is_match(output),
@@ -24,7 +39,7 @@ pub async fn mirrord_ls(#[future] service_for_mirrord_ls: KubeService) {
         );
     });
 
-    for target_type in ["pod", "deployment", "statefulset", "cronjob", "job"] {
+    for target_type in expected_target_types {
         assert!(
             targets
                 .iter()