diff --git a/CHANGELOG.md b/CHANGELOG.md
index 01ef9767..53c2d27f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,9 @@ to retrieve optimal classification timing.
 * `TimeSeriesScalerMinMax` and `TimeSeriesScalerMeanVariance` now scales based on fitted data characteristics
 when `per_timeseries` is False. ([#280](https://github.com/tslearn-team/tslearn/issues/280))
 * Fix `LearningShapelets.shapelets_` attribute computation.
+* Document `cdist_normalized_cc` and `y_shifted_sbd_vec` in the `tslearn.metrics`
+API reference — they were already exported via `tslearn.metrics.__all__`, just
+missing from the Sphinx autosummary. ([#343](https://github.com/tslearn-team/tslearn/issues/343))
 
 ## [v0.8.1]
 
diff --git a/docs/gen_modules/tslearn.metrics.rst b/docs/gen_modules/tslearn.metrics.rst
index 4d43ea9d..5c7088be 100644
--- a/docs/gen_modules/tslearn.metrics.rst
+++ b/docs/gen_modules/tslearn.metrics.rst
@@ -45,3 +45,5 @@ tslearn.metrics
       frechet_path
       frechet_path_from_metric
       frechet_accumulated_matrix
+      cdist_normalized_cc
+      y_shifted_sbd_vec
diff --git a/tests/test_metrics.py b/tests/test_metrics.py
index 184cf4db..49a8c4a7 100644
--- a/tests/test_metrics.py
+++ b/tests/test_metrics.py
@@ -1111,3 +1111,30 @@ def test_sax():
         dataset2=[[-1, 0, 1], [1, 0, 1]],
     )
     np.testing.assert_equal(dists, expected)
+
+
+def test_cycc_functions_documented():
+    """Regression test for #343: cross-correlation helpers exported from
+    ``tslearn.metrics`` (sourced in ``cycc.py``) must appear in the
+    Sphinx autosummary so they show up in the generated reference docs.
+    """
+    import pathlib
+
+    # Symbols re-exported from cycc.py — these are part of the public API
+    # via ``tslearn.metrics.__all__`` but historically were absent from the
+    # autosummary block, leaving them undocumented on readthedocs.
+    cycc_public = ["cdist_normalized_cc", "y_shifted_sbd_vec"]
+    for name in cycc_public:
+        assert name in tslearn.metrics.__all__, (
+            f"{name} is expected to be re-exported from tslearn.metrics"
+        )
+
+    repo_root = pathlib.Path(__file__).resolve().parents[1]
+    rst_path = repo_root / "docs" / "gen_modules" / "tslearn.metrics.rst"
+    assert rst_path.is_file(), f"missing {rst_path}"
+    rst_text = rst_path.read_text()
+    for name in cycc_public:
+        assert name in rst_text, (
+            f"{name} is exported by tslearn.metrics but missing from "
+            f"docs/gen_modules/tslearn.metrics.rst autosummary"
+        )