diff --git a/.github/workflows/dependabot_auto_approve.yaml b/.github/workflows/dependabot_auto_approve.yaml
new file mode 100644
index 0000000..d550d54
--- /dev/null
+++ b/.github/workflows/dependabot_auto_approve.yaml
@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2024 Benjamin Thomas Schwertfeger
+# GitHub: https://github.com/btschwertfeger
+#
+# Workflow that approves and merges all pull requests from the dependabot[bot]
+# author.
+#
+# Source (May, 2024):
+# - https://blog.somewhatabstract.com/2021/10/11/setting-up-dependabot-with-github-actions-to-approve-and-merge/
+
+name: Dependabot auto-merge
+on: pull_request_target
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    if: ${{ github.actor == 'dependabot[bot]' }}
+    steps:
+      - name: Dependabot metadata
+        id: dependabot-metadata
+        uses: dependabot/fetch-metadata@v1.1.1
+        with:
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+      - name: Approve a PR
+        run: gh pr review --approve "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Enable auto-merge for Dependabot PRs
+        if: ${{ steps.dependabot-metadata.outputs.update-type != 'version-update:semver-major' }}
+        run: gh pr merge --auto --squash "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/kraken/nft/trade.py b/kraken/nft/trade.py
index d22e862..0ac608a 100644
--- a/kraken/nft/trade.py
+++ b/kraken/nft/trade.py
@@ -136,6 +136,8 @@ def modify_auction(
         """
         Modify an existing auction owned by the user
 
+        - https://docs.kraken.com/rest/#tag/NFT-Trading/operation/modifyAuction
+
         :param auction_id: ID referencing the auction
         :type auction_id: str
         :param ask_price: New ask price (only for fixed price auction type),
@@ -183,6 +185,8 @@ def cancel_auction(
         """
         Cancel an existing auction owned by the user
 
+        - https://docs.kraken.com/rest/#tag/NFT-Trading/operation/cancelAuction
+
         :param auction_id: IDs referencing the auctions to cancel
         :type auction_id: list[str]
         :param otp: One time password, defaults to None
diff --git a/tests/nft/test_nft_trade.py b/tests/nft/test_nft_trade.py
index 998cc2b..9d0c4ef 100644
--- a/tests/nft/test_nft_trade.py
+++ b/tests/nft/test_nft_trade.py
@@ -16,7 +16,6 @@
 from datetime import datetime, timedelta
 
 from kraken.exceptions import (
-    KrakenAuctionNotOwnedByUserError,
     KrakenInvalidArgumentBelowMinError,
     KrakenInvalidArgumentOfferNotFoundError,
     KrakenNFTNotAvailableError,
@@ -59,15 +58,24 @@ def test_nft_trade_create_auction(nft_auth_trade: Trade) -> None:
 @pytest.mark.nft_auth()
 @pytest.mark.nft_trade()
 def test_nft_trade_modify_auction(nft_auth_trade: Trade) -> None:
-    """Checks the ``modify_auction`` endpoint."""
+    """
+    Checks the ``modify_auction`` endpoint.
+    It is sufficient here to check that the request is valid, even if the
+    auction is not valid.
+    """
 
-    with pytest.raises(KrakenAuctionNotOwnedByUserError):
-        nft_auth_trade.modify_auction(
-            auction_id="AT2POJ-4CH3O-4TH6JH",
-            ask_price="0.3",
-        )
+    response = nft_auth_trade.modify_auction(
+        auction_id="AT2POJ-4CH3O-4TH6JH",
+        ask_price="0.3",
+    )
+    assert isinstance(response, dict)
+    assert response.get(
+        "error",
+        [],
+    ) == ["EAPI:Invalid arguments:No auction with the provided ID"]
 
 
+@pytest.mark.wip()
 @pytest.mark.nft()
 @pytest.mark.nft_auth()
 @pytest.mark.nft_trade()
@@ -83,7 +91,7 @@ def test_nft_trade_cancel_auction(nft_auth_trade: Trade) -> None:
     assert isinstance(result["statuses"][0], dict)
     assert result["statuses"][0].get("id") == "AT2POJ-4CH3O-4TH6JH"
     assert result["statuses"][0].get("status") == "failed"
-    assert result["statuses"][0].get("reason") == "no permission"
+    assert result["statuses"][0].get("reason") == "not found"
 
 
 @pytest.mark.nft()