diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1b238bc55f..3e804ff794 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1354,6 +1354,9 @@ jobs:
             NPM_VERSION="$(python client/python/scripts/check_version.py --node)"
             JAVA_VERSION="$(python client/python/scripts/check_version.py --java)"
             RUST_VERSION="$(python client/python/scripts/check_version.py --rust)"
+            # Nothing publishes the editors, but their manifests carry the same
+            # version, so a tag fails here when one disagrees; no export needed.
+            python client/python/scripts/check_version.py --editors > /dev/null
             echo "export OPENSYSML_VERSION=${VERSION}" >> "$BASH_ENV"
             echo "export NPM_VERSION=${NPM_VERSION}" >> "$BASH_ENV"
             echo "export JAVA_VERSION=${JAVA_VERSION}" >> "$BASH_ENV"
diff --git a/changes/unreleased/editor-versions-lockstep.changed.md b/changes/unreleased/editor-versions-lockstep.changed.md
new file mode 100644
index 0000000000..1a4786b9c6
--- /dev/null
+++ b/changes/unreleased/editor-versions-lockstep.changed.md
@@ -0,0 +1,6 @@
+- **The editors carry the core version, in lockstep with the clients.** The VS
+  Code and SysON frontend package.json files (and their locks), the Cameo and
+  SysON poms and their children's `<parent><version>` moved from `0.1.0` /
+  `0.1.0-SNAPSHOT` to `0.9.0`, the version `_version.py` declares. Nothing
+  publishes the editors, but `check_version.py --editors` now fails a release
+  early when any of them disagrees, alongside a pytest gate on every PR.
diff --git a/client/python/scripts/check_version.py b/client/python/scripts/check_version.py
index b9d8ab7315..274dc03647 100644
--- a/client/python/scripts/check_version.py
+++ b/client/python/scripts/check_version.py
@@ -14,7 +14,10 @@
 With `--node`, `--java` or `--rust` the version client/node/package.json,
 client/java/pom.xml or client/rust/opensysml/Cargo.toml declares is checked
 the same way and printed instead — all three clients are published from the
-same tag, at the SemVer spelling of the same version.
+same tag, at the SemVer spelling of the same version. `--editors` runs the
+same check over every manifest an editor takes its version from: nothing
+publishes the editors, but their versions follow the core's, so a release
+still fails early when one disagrees.
 
 The core tags are SemVer and the package version is PEP 440, so the tag is
 translated before the comparison: `v0.9.0-rc1` names `0.9.0rc1`. Only the SemVer
@@ -55,6 +58,24 @@
 JAVA_POM = os.path.join(REPO_ROOT, "client", "java", "pom.xml")
 RUST_CARGO = os.path.join(REPO_ROOT, "client", "rust", "opensysml", "Cargo.toml")
 
+# Every manifest an editor takes its version from, as (repo-relative path,
+# reader kind). The editors carry the core version even though nothing
+# publishes them.
+EDITOR_MANIFESTS = (
+    ("editors/vscode/package.json", "json"),
+    ("editors/vscode/package-lock.json", "lock"),
+    ("editors/syson/frontend/package.json", "json"),
+    ("editors/syson/frontend/package-lock.json", "lock"),
+    ("editors/cameo/pom.xml", "pom"),
+    ("editors/syson/pom.xml", "pom"),
+    ("editors/cameo/plugin/pom.xml", "parent"),
+    ("editors/cameo/tools/pom.xml", "parent"),
+    ("editors/cameo/openapi-stubs/pom.xml", "parent"),
+    ("editors/cameo/dist/pom.xml", "parent"),
+    ("editors/syson/backend/pom.xml", "parent"),
+    ("editors/syson/syson-api-stubs/pom.xml", "parent"),
+)
+
 
 class VersionError(Exception):
     """A tag that does not name a publishable opensysml version."""
@@ -332,6 +353,106 @@ def rust_version(declared=None, rust=None, tag=None):
     )
 
 
+def lock_declared_version(lock_path):
+    """The version a package-lock.json's root package declares.
+
+    The lock repeats the package.json version twice — the top-level `version`
+    and `packages[""]["version"]` — and the two must agree.
+
+    Args:
+        lock_path (str): Path to the package-lock.json
+
+    Returns:
+        str: The declared version
+
+    Raises:
+        VersionError: If either copy is missing or they disagree
+    """
+    with open(lock_path, encoding="utf-8") as f:
+        lock = json.load(f)
+    top = lock.get("version")
+    root = lock.get("packages", {}).get("", {}).get("version")
+    if not isinstance(top, str) or not isinstance(root, str):
+        raise VersionError(
+            f"{lock_path} declares no version: expected both the top-level "
+            "'version' and packages[\"\"][\"version\"]"
+        )
+    if top != root:
+        raise VersionError(
+            f"{lock_path} declares {top!r} at the top level but "
+            f"packages[\"\"] declares {root!r}; the two must agree. Run "
+            "`npm install --package-lock-only` in the package's directory."
+        )
+    return top
+
+
+def pom_parent_version(pom):
+    """The version a child pom's <parent> element names.
+
+    Args:
+        pom (str): Path to the child pom.xml
+
+    Returns:
+        str: The parent version
+
+    Raises:
+        VersionError: If the pom has no <parent><version>
+    """
+    project = ET.parse(pom).getroot()
+    version = project.findtext(
+        "{http://maven.apache.org/POM/4.0.0}parent/"
+        "{http://maven.apache.org/POM/4.0.0}version"
+    )
+    if version is None:
+        raise VersionError(f"{pom} declares no <parent><version>")
+    return version
+
+
+_EDITOR_READERS = {
+    "json": node_declared_version,
+    "lock": lock_declared_version,
+    "pom": java_declared_version,
+    "parent": pom_parent_version,
+}
+
+
+def editors_version(declared=None, tag=None, manifests=EDITOR_MANIFESTS, root=REPO_ROOT):
+    """The editors' version, checked over every manifest against _version.py and the tag.
+
+    Args:
+        declared (str, optional): Version opensysml/_version.py declares; read
+            when omitted
+        tag (str, optional): Core release tag the release runs from
+        manifests (tuple): (repo-relative path, reader kind) pairs; defaults to
+            EDITOR_MANIFESTS
+        root (str): Repo root the relative paths resolve against
+
+    Returns:
+        str: The version every editor manifest declares
+
+    Raises:
+        VersionError: If any manifest disagrees with _version.py, or the tag
+            does not spell the version a manifest declares
+    """
+    declared = declared_version() if declared is None else declared
+    version = None
+    for relpath, kind in manifests:
+        version = _client_version(
+            relpath,
+            relpath,
+            "the editors' release",
+            "The editors",
+            _EDITOR_READERS[kind](os.path.join(root, relpath)),
+            declared,
+            tag,
+            "set every editor manifest docs/project/releasing.md lists to the "
+            "SemVer spelling of that version and run `npm install "
+            "--package-lock-only` in editors/vscode and "
+            "editors/syson/frontend.",
+        )
+    return version
+
+
 def _client_version(what, file, registry, client_name, client, declared, tag, remedy):
     """The lockstep check the published client manifests share.
 
@@ -427,6 +548,11 @@ def main(argv=None):
         action="store_true",
         help="check and print client/rust/opensysml/Cargo.toml's version instead",
     )
+    clients.add_argument(
+        "--editors",
+        action="store_true",
+        help="check every editor manifest's version and print it instead",
+    )
     parser.add_argument(
         "--pre-release",
         action="store_true",
@@ -442,6 +568,8 @@ def main(argv=None):
             version = java_version(declared=version, tag=args.tag)
         elif args.rust:
             version = rust_version(declared=version, tag=args.tag)
+        elif args.editors:
+            version = editors_version(declared=version, tag=args.tag)
         pre_release = is_pre_release(version)
     except VersionError as e:
         print(f"error: {e}", file=sys.stderr)
diff --git a/client/python/tests/test_check_version.py b/client/python/tests/test_check_version.py
index 484c54271a..53e3c2097c 100644
--- a/client/python/tests/test_check_version.py
+++ b/client/python/tests/test_check_version.py
@@ -373,3 +373,119 @@ def test_main_prints_the_crates_version_the_tag_names(capsys):
 def test_main_refuses_rust_and_java_together():
     with pytest.raises(SystemExit):
         check_version.main(["--tag", "v0.9.0", "--rust", "--java"])
+
+
+_EDITOR_PARENTS = (
+    "editors/cameo/plugin/pom.xml",
+    "editors/cameo/tools/pom.xml",
+    "editors/cameo/openapi-stubs/pom.xml",
+    "editors/cameo/dist/pom.xml",
+    "editors/syson/backend/pom.xml",
+    "editors/syson/syson-api-stubs/pom.xml",
+)
+
+
+def _editor_tree(root, version):
+    """The minimal editor manifest tree editors_version reads, at one version."""
+    ns = 'xmlns="http://maven.apache.org/POM/4.0.0"'
+    for pkg in ("editors/vscode", "editors/syson/frontend"):
+        (root / pkg).mkdir(parents=True, exist_ok=True)
+        (root / pkg / "package.json").write_text(
+            f'{{"version": "{version}"}}', encoding="utf-8"
+        )
+        (root / pkg / "package-lock.json").write_text(
+            f'{{"version": "{version}", '
+            f'"packages": {{"": {{"version": "{version}"}}}}}}',
+            encoding="utf-8",
+        )
+    for relpath in ("editors/cameo/pom.xml", "editors/syson/pom.xml"):
+        (root / relpath).parent.mkdir(parents=True, exist_ok=True)
+        (root / relpath).write_text(
+            f'<project {ns}><version>{version}</version></project>',
+            encoding="utf-8",
+        )
+    for relpath in _EDITOR_PARENTS:
+        (root / relpath).parent.mkdir(parents=True, exist_ok=True)
+        (root / relpath).write_text(
+            f'<project {ns}><parent><version>{version}</version></parent></project>',
+            encoding="utf-8",
+        )
+
+
+def test_editors_version_agrees_with_the_real_tree():
+    """Every editor manifest must carry _version.py's SemVer spelling on every commit."""
+    declared = check_version.declared_version()
+    version = check_version.editors_version()
+    assert check_version.pep440_from_semver(version, "v") == declared
+
+
+def test_main_prints_the_editors_version_the_tag_names(capsys):
+    version = check_version.editors_version()
+    assert check_version.main(["--tag", f"v{version}", "--editors"]) == 0
+    assert capsys.readouterr().out.strip() == version
+
+
+def test_editors_version_accepts_an_agreeing_tree(tmp_path):
+    _editor_tree(tmp_path, "0.9.0")
+    assert (
+        check_version.editors_version(
+            declared="0.9.0", tag="v0.9.0", root=str(tmp_path)
+        )
+        == "0.9.0"
+    )
+
+
+def test_editors_version_rejects_one_disagreeing_json(tmp_path):
+    _editor_tree(tmp_path, "0.9.0")
+    (tmp_path / "editors/vscode/package.json").write_text(
+        '{"version": "0.9.1"}', encoding="utf-8"
+    )
+    with pytest.raises(
+        check_version.VersionError, match="editors/vscode/package.json declares"
+    ):
+        check_version.editors_version(declared="0.9.0", root=str(tmp_path))
+
+
+def test_lock_declared_version_rejects_mismatched_copies(tmp_path):
+    lock = tmp_path / "package-lock.json"
+    lock.write_text(
+        '{"version": "0.9.0", "packages": {"": {"version": "0.9.1"}}}',
+        encoding="utf-8",
+    )
+    with pytest.raises(check_version.VersionError, match="must agree"):
+        check_version.lock_declared_version(str(lock))
+
+
+def test_pom_parent_version_rejects_a_pom_without_parent_version(tmp_path):
+    pom = tmp_path / "pom.xml"
+    pom.write_text(
+        '<project xmlns="http://maven.apache.org/POM/4.0.0"><parent/></project>',
+        encoding="utf-8",
+    )
+    with pytest.raises(
+        check_version.VersionError, match="declares no <parent><version>"
+    ):
+        check_version.pom_parent_version(str(pom))
+
+
+def test_editors_version_accepts_a_matching_pre_release(tmp_path):
+    _editor_tree(tmp_path, "0.9.1-rc.1")
+    assert (
+        check_version.editors_version(
+            declared="0.9.1rc1", tag="v0.9.1-rc.1", root=str(tmp_path)
+        )
+        == "0.9.1-rc.1"
+    )
+
+
+def test_editors_version_rejects_a_tag_that_misspells_the_version(tmp_path):
+    _editor_tree(tmp_path, "0.9.0")
+    with pytest.raises(check_version.VersionError, match="must spell it exactly"):
+        check_version.editors_version(
+            declared="0.9.0", tag="v0.9.1", root=str(tmp_path)
+        )
+
+
+def test_main_refuses_editors_and_node_together():
+    with pytest.raises(SystemExit):
+        check_version.main(["--tag", "v0.9.0", "--editors", "--node"])
diff --git a/docs/project/nightly.md b/docs/project/nightly.md
index f6122d63c2..fd98a260e0 100644
--- a/docs/project/nightly.md
+++ b/docs/project/nightly.md
@@ -56,9 +56,9 @@ And one a stable release does not ship:
   from the same commit (as `make vscode-package` does). The extension is side-loaded rather than
   published to a marketplace, so the snapshot is where a build of it is picked up. Its
   version is the extension manifest's with the snapshot version appended as the pre-release
-  part — `0.1.0-nightly-<yyyymmdd>-<commit>` — so VS Code tells one night's build from the
+  part — `0.9.0-nightly-<yyyymmdd>-<commit>` — so VS Code tells one night's build from the
   next, installs a later night over an earlier one without `--force`, and ranks any stable
-  `0.1.0` above them all. It is in `SHA256SUMS.txt` with the rest.
+  `0.9.0` above them all. It is in `SHA256SUMS.txt` with the rest.
 
 Not in a snapshot: the Windows installer, the Authenticode-signed Windows binaries, the
 Homebrew formula, and the PyPI, npm, Maven and crates.io client packages. Those belong to the
diff --git a/docs/project/releasing.md b/docs/project/releasing.md
index c71a04585f..203b631b21 100644
--- a/docs/project/releasing.md
+++ b/docs/project/releasing.md
@@ -120,7 +120,16 @@ branch that moves the integration state onto `main`:
    spelling as package.json. `client/rust/opensysml/Cargo.toml` follows too:
    set `[package] version` to the same spelling and run
    `cargo update -p opensysml` in `client/rust` so the lockfile
-   agrees. Anything else the release
+   agrees. The editors carry the same spelling too, though nothing publishes them:
+   `"version"` in `editors/vscode/package.json` and
+   `editors/syson/frontend/package.json`, each lock regenerated with
+   `npm install --package-lock-only` in that directory; `<version>` in
+   `editors/cameo/pom.xml` and `editors/syson/pom.xml`; and `<parent><version>`
+   in their child poms (`editors/cameo/plugin`, `editors/cameo/tools`,
+   `editors/cameo/openapi-stubs`, `editors/cameo/dist`, `editors/syson/backend`
+   and `editors/syson/syson-api-stubs`). `check_version.py --editors` in
+   `build-python-package` fails the release early when any of them disagrees.
+   Anything else the release
    needs (a doc that names the version) lands here too; a feature does not. Check the wire compatibility
    against the released schema, not the branch's own source:
    `make proto-breaking BUF_BREAKING_REF=origin/main` (the default baseline is
@@ -167,7 +176,7 @@ Tags are matched by `/^v.*/` in `.circleci/config.yml`. A tag on a commit that
 fails the suite fails the release workflow before anything is published, and so
 does a tag whose version `client/python/opensysml/_version.py`,
 `client/node/package.json`, `client/java/pom.xml` or
-`client/rust/opensysml/Cargo.toml` does not declare.
+`client/rust/opensysml/Cargo.toml` or an editor manifest does not declare.
 
 ## What CircleCI publishes
 
@@ -1256,6 +1265,12 @@ disagree, and the pytest gate in `test_check_version.py` — including the test
 that every in-repo reference names the pom's version — runs on every PR that
 touches either file. The tag must spell the version exactly, `v` aside.
 
+The editors' own versions are in the same lockstep: every manifest
+`check_version.py --editors` reads — the VS Code and SysON frontend
+package.json files and their locks, the Cameo and SysON parent poms and their
+children's `<parent><version>` — carries the SemVer spelling, and the release
+fails early when one disagrees.
+
 ### Why the core's tag
 
 The client follows the Python and Node clients' choice (see
diff --git a/editors/README.md b/editors/README.md
index b393879f32..d817fe5cc3 100644
--- a/editors/README.md
+++ b/editors/README.md
@@ -27,3 +27,14 @@ directory here with its own build.
   synchronization are designed only; the discovery against release `v2026.9.0`, module layout,
   call sequence and phased plan are in
   [`docs/internals/design/syson-plugin.md`](../docs/internals/design/syson-plugin.md).
+
+## Versions
+
+The editors carry the core version — `0.9.0` now — the same lockstep the clients
+follow, even though nothing publishes them. `check_version.py --editors` checks
+every manifest (the two package.json files and their locks, the Cameo and SysON
+poms and their children's `<parent><version>`), and a release fails early when
+one disagrees. The client references the editors build against —
+`opensysml.client.version` in the Cameo pom and the `opensysml-client`
+dependency in the SysON backend pom — are pinned to `client/java/pom.xml` the
+same way.
diff --git a/editors/cameo/dist/pom.xml b/editors/cameo/dist/pom.xml
index 4e0cbefaea..61f7e07786 100644
--- a/editors/cameo/dist/pom.xml
+++ b/editors/cameo/dist/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.openmbee</groupId>
     <artifactId>opensysml-cameo-parent</artifactId>
-    <version>0.1.0-SNAPSHOT</version>
+    <version>0.9.0</version>
   </parent>
   <artifactId>opensysml-cameo-dist</artifactId>
   <packaging>pom</packaging>
diff --git a/editors/cameo/openapi-stubs/pom.xml b/editors/cameo/openapi-stubs/pom.xml
index 11dc26ee18..93eed9c4bb 100644
--- a/editors/cameo/openapi-stubs/pom.xml
+++ b/editors/cameo/openapi-stubs/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.openmbee</groupId>
     <artifactId>opensysml-cameo-parent</artifactId>
-    <version>0.1.0-SNAPSHOT</version>
+    <version>0.9.0</version>
   </parent>
   <artifactId>opensysml-cameo-openapi-stubs</artifactId>
   <name>Compile-only Cameo OpenAPI stubs</name>
diff --git a/editors/cameo/plugin/pom.xml b/editors/cameo/plugin/pom.xml
index 99425cc76b..c98a715e50 100644
--- a/editors/cameo/plugin/pom.xml
+++ b/editors/cameo/plugin/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.openmbee</groupId>
     <artifactId>opensysml-cameo-parent</artifactId>
-    <version>0.1.0-SNAPSHOT</version>
+    <version>0.9.0</version>
   </parent>
   <artifactId>opensysml-cameo-plugin</artifactId>
   <name>OpenSysML Cameo plugin</name>
diff --git a/editors/cameo/pom.xml b/editors/cameo/pom.xml
index eab125553f..fa2cae5623 100644
--- a/editors/cameo/pom.xml
+++ b/editors/cameo/pom.xml
@@ -5,7 +5,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.openmbee</groupId>
   <artifactId>opensysml-cameo-parent</artifactId>
-  <version>0.1.0-SNAPSHOT</version>
+  <version>0.9.0</version>
   <packaging>pom</packaging>
   <name>OpenSysML Cameo plugin</name>
   <modules>
diff --git a/editors/cameo/tools/pom.xml b/editors/cameo/tools/pom.xml
index ef447ed1ea..fed47d64e8 100644
--- a/editors/cameo/tools/pom.xml
+++ b/editors/cameo/tools/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.openmbee</groupId>
     <artifactId>opensysml-cameo-parent</artifactId>
-    <version>0.1.0-SNAPSHOT</version>
+    <version>0.9.0</version>
   </parent>
   <artifactId>opensysml-cameo-tools</artifactId>
   <name>OpenSysML Cameo build tools</name>
diff --git a/editors/syson/backend/pom.xml b/editors/syson/backend/pom.xml
index 5846dead2a..0fbdf3a279 100644
--- a/editors/syson/backend/pom.xml
+++ b/editors/syson/backend/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.openmbee</groupId>
         <artifactId>opensysml-syson</artifactId>
-        <version>0.1.0-SNAPSHOT</version>
+        <version>0.9.0</version>
     </parent>
 
     <artifactId>opensysml-syson-backend</artifactId>
diff --git a/editors/syson/frontend/package-lock.json b/editors/syson/frontend/package-lock.json
index 2ec48424cb..5834ddb75c 100644
--- a/editors/syson/frontend/package-lock.json
+++ b/editors/syson/frontend/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@openmbee/opensysml-syson",
-  "version": "0.1.0",
+  "version": "0.9.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@openmbee/opensysml-syson",
-      "version": "0.1.0",
+      "version": "0.9.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
         "@emotion/react": "11.14.0",
diff --git a/editors/syson/frontend/package.json b/editors/syson/frontend/package.json
index 40ebac3a40..6656b0ec4b 100644
--- a/editors/syson/frontend/package.json
+++ b/editors/syson/frontend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@openmbee/opensysml-syson",
-  "version": "0.1.0",
+  "version": "0.9.0",
   "private": false,
   "type": "module",
   "main": "dist/opensysml-syson.cjs.js",
diff --git a/editors/syson/pom.xml b/editors/syson/pom.xml
index 06b055925e..9dff04f158 100644
--- a/editors/syson/pom.xml
+++ b/editors/syson/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>org.openmbee</groupId>
     <artifactId>opensysml-syson</artifactId>
-    <version>0.1.0-SNAPSHOT</version>
+    <version>0.9.0</version>
     <packaging>pom</packaging>
 
     <name>OpenSysML SysON integration</name>
diff --git a/editors/syson/syson-api-stubs/pom.xml b/editors/syson/syson-api-stubs/pom.xml
index f9ba211589..89f1f57dc7 100644
--- a/editors/syson/syson-api-stubs/pom.xml
+++ b/editors/syson/syson-api-stubs/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.openmbee</groupId>
         <artifactId>opensysml-syson</artifactId>
-        <version>0.1.0-SNAPSHOT</version>
+        <version>0.9.0</version>
     </parent>
 
     <artifactId>opensysml-syson-api-stubs</artifactId>
diff --git a/editors/vscode/package-lock.json b/editors/vscode/package-lock.json
index 167b3bde23..b58587959d 100644
--- a/editors/vscode/package-lock.json
+++ b/editors/vscode/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "opensysml-sysml",
-  "version": "0.1.0",
+  "version": "0.9.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "opensysml-sysml",
-      "version": "0.1.0",
+      "version": "0.9.0",
       "license": "Apache-2.0",
       "dependencies": {
         "elkjs": "0.12.0",
diff --git a/editors/vscode/package.json b/editors/vscode/package.json
index ed3bd90e86..4a94fefee9 100644
--- a/editors/vscode/package.json
+++ b/editors/vscode/package.json
@@ -2,7 +2,7 @@
   "name": "opensysml-sysml",
   "displayName": "SysML v2 (OpenSysML)",
   "description": "SysML v2 and KerML syntax highlighting and language support backed by the OpenSysML language server.",
-  "version": "0.1.0",
+  "version": "0.9.0",
   "publisher": "open-mbee",
   "license": "Apache-2.0",
   "repository": {
diff --git a/scripts/ci-changed-areas-test.sh b/scripts/ci-changed-areas-test.sh
index d0b3ee22ae..611dbbc4cd 100755
--- a/scripts/ci-changed-areas-test.sh
+++ b/scripts/ci-changed-areas-test.sh
@@ -55,8 +55,14 @@ case_ rust-manifest python,rust client/rust/opensysml/Cargo.toml
 case_ rust-lock python,rust client/rust/Cargo.lock
 case_ julia-only julia client/julia/OpenSysML/src/connection.jl
 case_ matlab-only matlab client/matlab/+opensysml/call.m
-case_ vscode-only vscode editors/vscode/package.json
+case_ vscode-manifest python,vscode editors/vscode/package.json
+case_ vscode-lock python,vscode editors/vscode/package-lock.json
+case_ syson-frontend-manifest python,syson editors/syson/frontend/package.json
+case_ syson-frontend-lock python,syson editors/syson/frontend/package-lock.json
+case_ syson-manifest python,syson editors/syson/pom.xml
 case_ cameo-manifest cameo,python editors/cameo/pom.xml
+case_ cameo-child-manifest cameo,python editors/cameo/plugin/pom.xml
+case_ syson-api-stubs-manifest python,syson editors/syson/syson-api-stubs/pom.xml
 case_ syson-backend-manifest python,syson editors/syson/backend/pom.xml
 case_ syson-readme docs,syson editors/syson/README.md
 # The grammar generator and its committed output are held together by a Go test.
diff --git a/scripts/ci-changed-areas.sh b/scripts/ci-changed-areas.sh
index 8311919d51..d82d830caa 100755
--- a/scripts/ci-changed-areas.sh
+++ b/scripts/ci-changed-areas.sh
@@ -53,9 +53,10 @@ emit go "$service"
 emit docs "$( { [[ "$service" = true ]] || matches "$docs_pattern"; } && echo true || echo false)"
 emit node "$( { [[ "$service" = true ]] || matches "$node_pattern"; } && echo true || echo false)"
 # The client-manifest/Python version lockstep tests live in the Python suite,
-# so the Node, Java and Rust manifests and the editors' client references have
+# so the Node, Java and Rust manifests, every editor manifest
+# check_version.py --editors reads, and the editors' client references have
 # to run it too.
-emit python "$( { [[ "$service" = true ]] || matches "$python_pattern" || matches '^client/node/package\.json$' || matches '^client/java/pom\.xml$' || matches '^client/rust/opensysml/Cargo\.toml$' || matches '^client/rust/Cargo\.lock$' || matches '^editors/cameo/pom\.xml$' || matches '^editors/syson/backend/pom\.xml$'; } && echo true || echo false)"
+emit python "$( { [[ "$service" = true ]] || matches "$python_pattern" || matches '^client/node/package\.json$' || matches '^client/java/pom\.xml$' || matches '^client/rust/opensysml/Cargo\.toml$' || matches '^client/rust/Cargo\.lock$' || matches '^editors/(cameo|syson(/backend)?)/pom\.xml$' || matches '^editors/(cameo/(plugin|tools|openapi-stubs|dist)|syson/syson-api-stubs)/pom\.xml$' || matches '^editors/(vscode|syson/frontend)/package(-lock)?\.json$'; } && echo true || echo false)"
 emit java "$( { [[ "$service" = true ]] || matches "$java_pattern"; } && echo true || echo false)"
 emit rust "$( { [[ "$service" = true ]] || matches "$rust_pattern"; } && echo true || echo false)"
 emit julia "$( { [[ "$service" = true ]] || matches "$julia_pattern"; } && echo true || echo false)"