diff --git a/src/ucode/databricks.py b/src/ucode/databricks.py
index 90c1808..08733ba 100644
--- a/src/ucode/databricks.py
+++ b/src/ucode/databricks.py
@@ -483,7 +483,7 @@ def _run_databricks_cli_installer(brew_subcommand: str = "install") -> None:
                 timeout=240,
             )
         elif system == "Darwin" and shutil.which("brew"):
-            run(["brew", brew_subcommand, "databricks"], timeout=240)
+            run(["brew", brew_subcommand, "databricks/tap/databricks"], timeout=240)
         elif shutil.which("curl"):
             run(["sh", "-c", f"curl -fsSL {UNIX_DATABRICKS_INSTALL_URL} | sudo sh"], timeout=240)
         elif shutil.which("wget"):
diff --git a/tests/test_databricks.py b/tests/test_databricks.py
index fffdba5..45c4350 100644
--- a/tests/test_databricks.py
+++ b/tests/test_databricks.py
@@ -13,6 +13,7 @@
     AI_GATEWAY_V2_DOCS_URL,
     _format_subprocess_result,
     _parse_databricks_cli_version,
+    _run_databricks_cli_installer,
     _scrub_databrickscfg,
     _scrub_json,
     build_auth_shell_command,
@@ -804,6 +805,22 @@ def test_raises_when_version_unparseable(self, tmp_path, monkeypatch):
             ensure_databricks_cli_version()
 
 
+class TestRunDatabricksCliInstaller:
+    @pytest.mark.parametrize("brew_subcommand", ["install", "upgrade"])
+    def test_macos_uses_fully_qualified_tap_formula(self, monkeypatch, brew_subcommand):
+        calls = []
+        monkeypatch.setattr(db_mod.platform, "system", lambda: "Darwin")
+        monkeypatch.setattr(db_mod.shutil, "which", lambda cmd: "/opt/homebrew/bin/brew")
+        monkeypatch.setattr(db_mod, "run", lambda cmd, **kw: calls.append(cmd))
+
+        _run_databricks_cli_installer(brew_subcommand=brew_subcommand)
+
+        # The fully-qualified formula forces Homebrew to the Databricks CLI in
+        # databricks/tap and fails if absent, rather than falling back to the
+        # unrelated `databricks` cask.
+        assert calls == [["brew", brew_subcommand, "databricks/tap/databricks"]]
+
+
 class TestIsUsageTableAccessError:
     """Pin which `ServerOperationError` strings trigger the friendly
     `system.ai_gateway.usage` permissions hint vs. fall through to the