diff --git a/.github/workflows/pypi-publish.yml b/.github/workflows/pypi-publish.yml
index e71564473..1784c4c8a 100644
--- a/.github/workflows/pypi-publish.yml
+++ b/.github/workflows/pypi-publish.yml
@@ -15,6 +15,9 @@ on:
       - ci/check_cargo_lock.py
       - ci/check_sdist.py
       - python/pyproject.toml
+      - python/Cargo.toml
+      - python/vendor/**
+      - rust/lancedb/Cargo.toml
       - Cargo.toml # Change in dependency frequently breaks builds
       - Cargo.lock
 
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 930ae67e2..17fe3a7b4 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -29,6 +29,63 @@ env:
   RUST_BACKTRACE: "1"
 
 jobs:
+  dependency-overrides:
+    name: Downstream Lance override
+    runs-on: ubuntu-24.04
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - name: Read the pinned Lance tag
+        id: lance
+        run: |
+          python3 - <<'PYTHON'
+          import os
+          import tomllib
+          from pathlib import Path
+
+          manifest = tomllib.loads(Path("Cargo.toml").read_text())
+          tag = manifest["workspace"]["dependencies"]["lance"]["tag"]
+          with open(os.environ["GITHUB_OUTPUT"], "a") as output:
+              output.write(f"tag={tag}\n")
+          PYTHON
+      - uses: actions/checkout@v6
+        with:
+          repository: lance-format/lance
+          ref: ${{ steps.lance.outputs.tag }}
+          path: local-lance
+      - name: Resolve a downstream workspace with a local Lance override
+        run: |
+          mkdir -p downstream/src
+          touch downstream/src/lib.rs
+          cat > downstream/Cargo.toml <<'TOML'
+          [package]
+          name = "lancedb-local-lance-consumer"
+          version = "0.1.0"
+          edition = "2024"
+
+          [workspace]
+
+          [dependencies]
+          lancedb = { path = "../rust/lancedb", default-features = false }
+          lance-arrow = { path = "../local-lance/rust/lance-arrow" }
+
+          [patch."https://github.com/lance-format/lance.git"]
+          lance-arrow = { path = "../local-lance/rust/lance-arrow" }
+          TOML
+          cargo metadata --manifest-path downstream/Cargo.toml --format-version 1 > downstream/graph.json
+          python3 - <<'PYTHON'
+          import json
+          from pathlib import Path
+
+          graph = json.loads(Path("downstream/graph.json").read_text())
+          packages = [p for p in graph["packages"] if p["name"] == "lance-arrow"]
+          assert len(packages) == 1, [p["id"] for p in packages]
+          assert Path(packages[0]["manifest_path"]).resolve() == Path(
+              "local-lance/rust/lance-arrow/Cargo.toml"
+          ).resolve()
+          PYTHON
+
   lint:
     timeout-minutes: 30
     runs-on: ubuntu-24.04
diff --git a/ci/set_lance_version.py b/ci/set_lance_version.py
index c7bf41f55..bef97f8ad 100644
--- a/ci/set_lance_version.py
+++ b/ci/set_lance_version.py
@@ -2,6 +2,8 @@ import argparse
 import re
 import sys
 import json
+import tomllib
+from pathlib import Path
 
 LANCE_GIT_URL = "https://github.com/lance-format/lance.git"
 
@@ -148,6 +150,18 @@ def update_cargo_toml(line_updater):
     with open("Cargo.toml", "w") as f:
         f.writelines(new_lines)
 
+    core_manifest = Path("rust/lancedb/Cargo.toml")
+    if core_manifest.exists():
+        lines = core_manifest.read_text().splitlines(keepends=True)
+        for index, line in enumerate(lines):
+            if line.startswith("lance-arrow ="):
+                updated = tomllib.loads(line_updater(line))["lance-arrow"]
+                config = {"version": updated} if isinstance(updated, str) else updated
+                if "path" in config:
+                    config["path"] = "../../" + config["path"]
+                lines[index] = dict_to_toml_line("lance-arrow", config)
+        core_manifest.write_text("".join(lines))
+
 
 def set_stable_version(version: str):
     """
diff --git a/ci/tests/test_set_lance_version.py b/ci/tests/test_set_lance_version.py
index 1493fc59d..1173eab84 100644
--- a/ci/tests/test_set_lance_version.py
+++ b/ci/tests/test_set_lance_version.py
@@ -4,6 +4,7 @@ import subprocess
 import sys
 import tempfile
 import textwrap
+import tomllib
 import unittest
 from pathlib import Path
 
@@ -83,6 +84,13 @@ lance_datafusion = {{ "version" = "=8.2.0-beta.4", "features" = ["substrait"], "
             with self.subTest(version=version), tempfile.TemporaryDirectory() as tmp:
                 workdir = Path(tmp)
                 (workdir / "Cargo.toml").write_text(CARGO_TOML)
+                core_manifest = workdir / "rust/lancedb/Cargo.toml"
+                core_manifest.parent.mkdir(parents=True)
+                core_manifest.write_text(
+                    "[dependencies]\nlance-arrow = { "
+                    'version = "=1.0.0", git = "https://github.com/lance-format/lance.git", '
+                    'tag = "v1.0.0" }\narrow.workspace = true\n'
+                )
                 command_log = workdir / "commands.log"
                 fake_bin = workdir / "bin"
                 fake_bin.mkdir()
@@ -111,6 +119,26 @@ lance_datafusion = {{ "version" = "=8.2.0-beta.4", "features" = ["substrait"], "
                     + updated_dependencies
                     + UNTOUCHED_DEPENDENCIES,
                 )
+                core = tomllib.loads(core_manifest.read_text())["dependencies"]
+                dependency = core["lance-arrow"]
+                if isinstance(dependency, str):
+                    dependency = {"version": dependency}
+                if version == "local":
+                    self.assertEqual(
+                        dependency["path"], "../../../lance/rust/lance-arrow"
+                    )
+                else:
+                    expected_version = {
+                        "stable": "9.9.9",
+                        "preview": "10.0.0-beta.3",
+                    }.get(version, version.removeprefix("v"))
+                    self.assertEqual(dependency["version"], f"={expected_version}")
+                    if "beta" in expected_version:
+                        self.assertEqual(dependency["git"], LANCE_GIT_URL)
+                        self.assertEqual(dependency["tag"], f"v{expected_version}")
+                    else:
+                        self.assertNotIn("git", dependency)
+                self.assertEqual(core["arrow"], {"workspace": True})
                 commands = command_log.read_text().splitlines()
                 for command in expected_commands:
                     self.assertTrue(
diff --git a/deny.toml b/deny.toml
index 77412709f..e4982c149 100644
--- a/deny.toml
+++ b/deny.toml
@@ -177,7 +177,9 @@ wildcards = "deny"
 # `[workspace.dependencies]` table: any crate used by more than one member must
 # go through `workspace = true`, and entries nothing uses are an error. This
 # keeps versions from drifting between the core crate and the bindings.
-workspace-dependencies = { duplicates = "deny", unused = "deny" }
+# Python bundles a patched path crate while the Rust SDK uses the overridable
+# upstream source. Check shared external declarations, not these path bindings.
+workspace-dependencies = { duplicates = "deny", unused = "deny", include-path-dependencies = false }
 # Internal workspace crates reference each other via `path = "..."`, which
 # cargo-deny sees as a wildcard version. That's fine for private workspace
 # members (not published to crates.io), so allow it specifically for paths.
diff --git a/python/Cargo.toml b/python/Cargo.toml
index 82fb7efae..265e4d270 100644
--- a/python/Cargo.toml
+++ b/python/Cargo.toml
@@ -22,7 +22,6 @@ bytes.workspace = true
 lancedb.workspace = true
 datafusion-common.workspace = true
 lance-core.workspace = true
-# The workspace path dependency includes the patched crate in Maturin sources.
 lance-arrow.workspace = true
 lance-namespace.workspace = true
 lance-namespace-impls.workspace = true
diff --git a/rust/lancedb/Cargo.toml b/rust/lancedb/Cargo.toml
index 006886647..c18db11fe 100644
--- a/rust/lancedb/Cargo.toml
+++ b/rust/lancedb/Cargo.toml
@@ -46,7 +46,7 @@ lance-index = { workspace = true, features = ["tokenizer-jieba", "tokenizer-lind
 lance-table = { workspace = true }
 lance-linalg = { workspace = true }
 lance-encoding = { workspace = true }
-lance-arrow = { workspace = true }
+lance-arrow = { version = "=15.0.0-beta.1", tag = "v15.0.0-beta.1", git = "https://github.com/lance-format/lance.git" }
 lance-namespace = { workspace = true }
 lance-namespace-impls = { workspace = true }
 metrics = { workspace = true, optional = true }