diff --git a/tests/test_release_workflow.py b/tests/test_release_workflow.py
index 99fb2909..4ae93519 100644
--- a/tests/test_release_workflow.py
+++ b/tests/test_release_workflow.py
@@ -577,10 +577,10 @@ def test_the_install_check_runs_on_three_systems_and_python_3_9(workflow):
 
 
 def test_the_header_says_how_to_release(workflow):
-    """No `docs/release-notes/v1.1.0.md` exists yet, so the header carries
-    the steps the docs pull request will point at: Brett Heap's acts, with
-    the trusted publisher's environment REQUIRED and why (RV599, SHOULD 1),
-    and the limits carried over from openDox-code."""
+    """The release notes (`docs/release-notes/v1.1.0.md` and `v1.1.1.md`)
+    point at this header for the steps, so it carries them: Brett Heap's
+    acts, with the trusted publisher's environment REQUIRED and why (RV599,
+    SHOULD 1), and the limits carried over from openDox-code."""
     text = WORKFLOW.read_text(encoding="utf-8")
     assert "# RELEASING TO PyPI." in text
     assert "gh workflow run release.yml --ref v<version> -f version=<version>" \
diff --git a/tests/test_repo_hygiene.py b/tests/test_repo_hygiene.py
index 00fc68b9..844246c2 100644
--- a/tests/test_repo_hygiene.py
+++ b/tests/test_repo_hygiene.py
@@ -1556,25 +1556,60 @@ def test_the_openrepotools_install_line_is_the_same_everywhere(name):
 
 #: THE ONE LINE THAT INSTALLS THIS STANDARD (#564), and every file that
 #: carries it: the installer it fetches, the command it installs (in its
-#: header), the README and its designed reading, and the release notes that
-#: introduced it. Pasted by people who cannot check it, like the two lines
-#: above, so the copies are held byte for byte. `releases/latest/download/`
-#: is what makes it the NEWEST release's `install.sh` every time.
+#: header), the README and its designed reading, and the notes of every
+#: release since v1.0.1, which introduced it. Pasted by people who cannot
+#: check it, like the two lines above, so the copies are held byte for byte.
+#: `releases/latest/download/` is what makes it the NEWEST release's
+#: `install.sh` every time.
 ONE_LINE_INSTALL = (
     "curl -fsSL https://github.com/opensoft/openRepoShape/releases/latest/"
     "download/install.sh | bash")
-ONE_LINE_INSTALL_IN = ["install.sh", "openRepoShape", "README.md",
-                       "docs/handbook.html", "docs/release-notes/v1.0.1.md"]
+#: The notes are read from `docs/release-notes/` when the tests are collected,
+#: not named, so a release's notes are held the day they are added, with no
+#: edit here (#885: the list named v1.0.1.md alone, so a mistyped line in
+#: v1.1.0.md passed). The set is the notes that predate the line: v1.0.0's
+#: carries none. A `.md` in that directory that is not a release's notes
+#: fails with them until it is named here; a `v*.md` named here fails the
+#: second test below.
+RELEASE_NOTES = REPO / "docs" / "release-notes"
+RELEASE_NOTES_WITHOUT_THE_ONE_LINE_INSTALL = {"v1.0.0.md"}
+ONE_LINE_INSTALL_IN = [
+    "install.sh", "openRepoShape", "README.md", "docs/handbook.html",
+    *(path.relative_to(REPO).as_posix()
+      for path in sorted(RELEASE_NOTES.glob("*.md"))
+      if path.name not in RELEASE_NOTES_WITHOUT_THE_ONE_LINE_INSTALL)]
 
 
 @pytest.mark.parametrize("name", ONE_LINE_INSTALL_IN)
 def test_the_one_line_install_is_the_same_everywhere(name):
-    text = (REPO / name).read_text(encoding="utf-8")
+    path = REPO / name
+    text = path.read_text(encoding="utf-8")
+    other = ""
+    if path.parent == RELEASE_NOTES:
+        other = (f", or, if it is not a release's notes, name {path.name!r} "
+                 "in RELEASE_NOTES_WITHOUT_THE_ONE_LINE_INSTALL")
     assert ONE_LINE_INSTALL in text, (
-        f"{name} must carry the one-line install byte for byte:\n"
+        f"{name} must carry the one-line install byte for byte{other}:\n"
         f"    {ONE_LINE_INSTALL}")
 
 
+def test_the_one_line_install_holds_the_release_notes_it_found():
+    """The notes are found, not named, so a directory that moved or a pattern
+    that stopped matching would hold none of them and pass; and the set is
+    for what is not a release's notes, so it may not name one: every `v*.md`
+    but v1.0.0.md, which predates the line, is held (#885). That one is
+    spelled out here, not read from the set this test holds to account."""
+    notes = {path.relative_to(REPO).as_posix()
+             for path in RELEASE_NOTES.glob("v*.md")
+             if path.name != "v1.0.0.md"}
+    assert {"docs/release-notes/v1.0.1.md",
+            "docs/release-notes/v1.1.0.md"} <= notes
+    unheld = sorted(notes - set(ONE_LINE_INSTALL_IN))
+    assert not unheld, (
+        f"{unheld} are release notes, so they are held, not named in "
+        "RELEASE_NOTES_WITHOUT_THE_ONE_LINE_INSTALL")
+
+
 def test_every_handbook_copy_of_the_one_line_install_is_the_same():
     """The handbook shows the one line in three code blocks: the masthead's,
     step 3's on the Linux, macOS and WSL2 tabs, and step 3's on the Windows