diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 80acd024..5186f083 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -29,13 +29,13 @@ repos:
               .*\.ipynb
           )$
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: "v0.4.8"
+    rev: "v0.5.2"
     hooks:
       - id: ruff
         args: [--fix, --exit-non-zero-on-fix]
       - id: ruff-format
   - repo: https://github.com/macisamuele/language-formatters-pre-commit-hooks
-    rev: v2.13.0
+    rev: v2.14.0
     hooks:
       - id: pretty-format-toml
         args: [--autofix, --no-sort]
diff --git a/pyproject.toml b/pyproject.toml
index 9c9b671c..7a0dce0a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -55,11 +55,13 @@ tests = [
   "dvclive[image,plots,markdown]",
   "ipython",
   "pytest_voluptuous",
-  "dpath"
+  "dpath",
+  "transformers[torch]",
+  "tf-keras"
 ]
 dev = [
   "dvclive[all,tests]",
-  "mypy==1.10.0",
+  "mypy==1.11.0",
   "types-PyYAML"
 ]
 mmcv = ["mmcv"]
@@ -67,12 +69,11 @@ tf = ["tensorflow"]
 xgb = ["xgboost"]
 lgbm = ["lightgbm"]
 huggingface = ["transformers", "datasets"]
-catalyst = ["catalyst>22"]
 fastai = ["fastai"]
 lightning = ["lightning>=2.0", "torch", "jsonargparse[signatures]>=4.26.1"]
 optuna = ["optuna"]
 all = [
-  "dvclive[image,mmcv,tf,xgb,lgbm,huggingface,catalyst,fastai,lightning,optuna,plots,markdown]"
+  "dvclive[image,mmcv,tf,xgb,lgbm,huggingface,fastai,lightning,optuna,plots,markdown]"
 ]
 
 [project.urls]
@@ -139,7 +140,7 @@ files = ["src", "tests"]
 ignore-words-list = "fpr"
 
 [tool.ruff.lint]
-ignore = ["N818", "UP006", "UP007", "UP035", "UP038", "B905", "PGH003"]
+ignore = ["N818", "UP006", "UP007", "UP035", "UP038", "B905", "PGH003", "SIM103"]
 select = ["F", "E", "W", "C90", "N", "UP", "YTT", "S", "BLE", "B", "A", "C4", "T10", "EXE", "ISC", "INP", "PIE", "T20", "PT", "Q", "RSE", "RET", "SLF", "SIM", "TID", "TCH", "INT", "ARG", "PGH", "PL", "TRY", "NPY", "RUF"]
 
 [tool.ruff.lint.per-file-ignores]
diff --git a/src/dvclive/catalyst.py b/src/dvclive/catalyst.py
deleted file mode 100644
index 532d31b3..00000000
--- a/src/dvclive/catalyst.py
+++ /dev/null
@@ -1,23 +0,0 @@
-# ruff: noqa: ARG002
-from typing import Optional
-
-from catalyst.core.callback import Callback, CallbackOrder
-
-from dvclive import Live
-
-
-class DVCLiveCallback(Callback):
-    def __init__(self, live: Optional[Live] = None, **kwargs):
-        super().__init__(order=CallbackOrder.external)
-        self.live = live if live is not None else Live(**kwargs)
-
-    def on_epoch_end(self, runner) -> None:
-        for loader_key, per_loader_metrics in runner.epoch_metrics.items():
-            for key, value in per_loader_metrics.items():
-                self.live.log_metric(
-                    f"{loader_key}/{key.replace('/', '_')}", float(value)
-                )
-        self.live.next_step()
-
-    def on_experiment_end(self, runner):
-        self.live.end()
diff --git a/src/dvclive/fabric.py b/src/dvclive/fabric.py
index 1b99b097..0e0903df 100644
--- a/src/dvclive/fabric.py
+++ b/src/dvclive/fabric.py
@@ -132,7 +132,9 @@ def _sanitize_params(params: Dict[str, Any]) -> Dict[str, Any]:
         }
 
         # logging of argparse.Namespace is not supported, sanitize as string
-        params = {k: str(v) if type(v) == Namespace else v for k, v in params.items()}
+        params = {
+            k: str(v) if isinstance(v, Namespace) else v for k, v in params.items()
+        }
 
         return params  # noqa: RET504
 
diff --git a/src/dvclive/live.py b/src/dvclive/live.py
index 8f49fc99..c0b4aa81 100644
--- a/src/dvclive/live.py
+++ b/src/dvclive/live.py
@@ -562,7 +562,7 @@ def log_plot(
         name: str,
         datapoints: Union[pd.DataFrame, np.ndarray, List[Dict]],
         x: str,
-        y: str,
+        y: Union[str, list[str]],
         template: Optional[str] = "linear",
         title: Optional[str] = None,
         x_label: Optional[str] = None,
@@ -579,7 +579,8 @@ def log_plot(
             datapoints (pd.DataFrame | np.ndarray | List[Dict]): Pandas DataFrame, Numpy
                 Array or List of dictionaries containing the data for the plot.
             x (str): name of the key (present in the dictionaries) to use as the x axis.
-            y (str): name of the key (present in the dictionaries) to use the y axis.
+            y (str | list[str]): name of the key or keys (present in the
+                dictionaries) to use the y axis.
             template (str): name of the `DVC plots template` to use. Defaults to
                 `"linear"`.
             title (str): title to be displayed. Defaults to
diff --git a/src/dvclive/plots/custom.py b/src/dvclive/plots/custom.py
index f7e55563..0ea15272 100644
--- a/src/dvclive/plots/custom.py
+++ b/src/dvclive/plots/custom.py
@@ -1,5 +1,5 @@
 from pathlib import Path
-from typing import Optional
+from typing import Optional, Union
 
 from dvclive.serialize import dump_json
 
@@ -15,7 +15,7 @@ def __init__(
         name: str,
         output_folder: str,
         x: str,
-        y: str,
+        y: Union[str, list[str]],
         template: Optional[str],
         title: Optional[str] = None,
         x_label: Optional[str] = None,
diff --git a/src/dvclive/plots/utils.py b/src/dvclive/plots/utils.py
index 80675dc9..ed9db22c 100644
--- a/src/dvclive/plots/utils.py
+++ b/src/dvclive/plots/utils.py
@@ -1,7 +1,6 @@
 import json
 
 NUMPY_INTS = [
-    "int_",
     "intc",
     "intp",
     "int8",
@@ -13,7 +12,7 @@
     "uint32",
     "uint64",
 ]
-NUMPY_FLOATS = ["float_", "float16", "float32", "float64"]
+NUMPY_FLOATS = ["float16", "float32", "float64"]
 NUMPY_SCALARS = NUMPY_INTS + NUMPY_FLOATS
 
 
diff --git a/tests/frameworks/test_catalyst.py b/tests/frameworks/test_catalyst.py
deleted file mode 100644
index bb195986..00000000
--- a/tests/frameworks/test_catalyst.py
+++ /dev/null
@@ -1,92 +0,0 @@
-# ruff: noqa: N806
-import os
-
-import pytest
-
-from dvclive import Live
-from dvclive.plots import Metric
-
-try:
-    import catalyst
-    import torch
-    from catalyst import dl
-
-    from dvclive.catalyst import DVCLiveCallback
-except ImportError:
-    pytest.skip("skipping catalyst tests", allow_module_level=True)
-
-
-@pytest.fixture()
-def runner():
-    return dl.SupervisedRunner(
-        engine=catalyst.utils.torch.get_available_engine(cpu=True),
-        input_key="features",
-        output_key="logits",
-        target_key="targets",
-        loss_key="loss",
-    )
-
-
-# see:
-# https://github.com/catalyst-team/catalyst/blob/e99f9/tests/catalyst/callbacks/test_batch_overfit.py
-@pytest.fixture()
-def runner_params():
-    from torch.utils.data import DataLoader, TensorDataset
-
-    catalyst.utils.set_global_seed(42)
-    num_samples, num_features = int(32e1), int(1e1)
-    X, y = torch.rand(num_samples, num_features), torch.rand(num_samples)
-    dataset = TensorDataset(X, y)
-    loader = DataLoader(dataset, batch_size=32, num_workers=0)
-    loaders = {"train": loader, "valid": loader}
-
-    model = torch.nn.Linear(num_features, 1)
-    criterion = torch.nn.MSELoss()
-    optimizer = torch.optim.Adam(model.parameters())
-    scheduler = torch.optim.lr_scheduler.MultiStepLR(optimizer, [3, 6])
-    return {
-        "model": model,
-        "criterion": criterion,
-        "optimizer": optimizer,
-        "scheduler": scheduler,
-        "loaders": loaders,
-    }
-
-
-def test_catalyst_callback(tmp_dir, runner, runner_params, mocker):
-    callback = DVCLiveCallback()
-    live = callback.live
-    spy = mocker.spy(live, "end")
-
-    runner.train(
-        **runner_params,
-        num_epochs=2,
-        callbacks=[
-            dl.AccuracyCallback(input_key="logits", target_key="targets"),
-            callback,
-        ],
-        logdir="./logs",
-        valid_loader="valid",
-        valid_metric="loss",
-        minimize_valid_metric=True,
-        verbose=True,
-        load_best_on_end=True,
-    )
-    spy.assert_called_once()
-
-    assert os.path.exists("dvclive")
-
-    train_path = tmp_dir / "dvclive" / "plots" / Metric.subfolder / "train"
-    valid_path = tmp_dir / "dvclive" / "plots" / Metric.subfolder / "valid"
-
-    assert train_path.is_dir()
-    assert valid_path.is_dir()
-    assert any("accuracy" in x.name for x in train_path.iterdir())
-    assert any("accuracy" in x.name for x in valid_path.iterdir())
-
-
-def test_catalyst_pass_logger():
-    logger = Live("train_logs")
-
-    assert DVCLiveCallback().live is not logger
-    assert DVCLiveCallback(live=logger).live is logger
diff --git a/tests/frameworks/test_huggingface.py b/tests/frameworks/test_huggingface.py
index ac824588..18b39901 100644
--- a/tests/frameworks/test_huggingface.py
+++ b/tests/frameworks/test_huggingface.py
@@ -103,6 +103,7 @@ def args():
         num_train_epochs=2,
         save_strategy="epoch",
         report_to="none",  # Disable auto-reporting to avoid duplication
+        use_cpu=True,
     )
 
 
@@ -173,7 +174,7 @@ def test_huggingface_log_model(
     trainer.train()
 
     expected_call_count = {
-        "all": 2,
+        "all": 3,
         True: 1,
         False: 0,
         None: 0,
diff --git a/tests/plots/test_custom.py b/tests/plots/test_custom.py
index 17b18f2b..349c726a 100644
--- a/tests/plots/test_custom.py
+++ b/tests/plots/test_custom.py
@@ -29,3 +29,30 @@ def test_log_custom_plot(tmp_dir):
         "x_label": "x_label",
         "y_label": "y_label",
     }
+
+
+def test_log_custom_plot_multi_y(tmp_dir):
+    live = Live()
+    out = tmp_dir / live.plots_dir / CustomPlot.subfolder
+
+    datapoints = [{"x": 1, "y1": 2, "y2": 3}, {"x": 4, "y1": 5, "y2": 6}]
+    live.log_plot(
+        "custom_linear",
+        datapoints,
+        x="x",
+        y=["y1", "y2"],
+        template="linear",
+        title="custom_title",
+        x_label="x_label",
+        y_label="y_label",
+    )
+
+    assert json.loads((out / "custom_linear.json").read_text()) == datapoints
+    assert live._plots["custom_linear"].plot_config == {
+        "template": "linear",
+        "title": "custom_title",
+        "x": "x",
+        "y": ["y1", "y2"],
+        "x_label": "x_label",
+        "y_label": "y_label",
+    }