diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..616d1d4
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,36 @@
+# exclude: ""
+
+repos:
+    # Format Code
+    - repo: https://github.com/ambv/black
+      rev: 22.8.0
+      hooks:
+        - id: black
+
+    # Sort imports
+    - repo: https://github.com/PyCQA/isort
+      rev: 5.12.0
+      hooks:
+      - id: isort
+        args: ["--profile", "black"]
+
+    # Formatting, Whitespace, etc
+    - repo: https://github.com/pre-commit/pre-commit-hooks
+      rev: v2.2.3
+      hooks:
+      - id: trailing-whitespace
+      - id: check-added-large-files
+        args: ['--maxkb=1000']
+      - id: check-ast
+      - id: check-json
+      - id: check-merge-conflict
+      - id: check-xml
+      - id: check-yaml
+      - id: debug-statements
+      - id: end-of-file-fixer
+      - id: requirements-txt-fixer
+      - id: mixed-line-ending
+        args: ['--fix=no']
+      - id: flake8
+        # args: ['--ignore=E203,E501,F811,E712,W503']
+        args: ['--config=.flake8']
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ac4eef3..1195c4f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.5.4] 2024-03-04
+### Fixed
+- Backward compatibility of `BERTScoreMrefs` with torchmetrics prior to 1.0.0.
+
+### Deleted
+- `Version` class to use `packaging.version.Version` instead.
+
 ## [0.5.3] 2024-01-09
 ### Fixed
 - Fix `BERTScoreMrefs` computation when all multiple references sizes are equal.
diff --git a/CITATION.cff b/CITATION.cff
index 191aff9..642983b 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -19,5 +19,5 @@ keywords:
   - captioning
   - audio-captioning
 license: MIT
-version: 0.5.3
-date-released: '2024-01-09'
+version: 0.5.4
+date-released: '2024-03-04'
diff --git a/README.md b/README.md
index 1ad898e..f9722af 100644
--- a/README.md
+++ b/README.md
@@ -100,6 +100,24 @@ print(sents_scores)
 
 Each metrics also exists as a python class version, like `aac_metrics.classes.cider_d.CIDErD`.
 
+## Which metric(s) should I choose for Automated Audio Captioning?
+To evaluate audio captioning systems, I would recommand to compute `SPIDEr`, `FENSE` and `Vocab` metrics. `SPIDEr` is useful to compare with the rest of the litterature, but it is highly sensitive to n-gram matching and can overestimate model trained with reinforcement learning. `FENSE` is more consistent and variable than `SPIDEr`, but uses a model not trained on audio captions. `Vocab` can give you an insight about the model diversity. To compute all of these metrics at once, you can use for example the `Evaluate` class:
+
+```python
+from aac_metrics import Evaluate
+
+evaluate = Evaluate(metrics=["spider", "fense", "vocab"])
+
+candidates: list[str] = ...
+mult_references: list[list[str]] = ...
+
+corpus_scores, _ = evaluate(candidates, mult_references)
+
+vocab_size = corpus_scores["vocab"]
+spider_score = corpus_scores["spider"]
+fense_score = corpus_scores["fense"]
+```
+
 ## Metrics
 ### Legacy metrics
 | Metric name | Python Class | Origin | Range | Short description |
@@ -187,7 +205,7 @@ SPIDEr-max [[7]](#spider-max) is a metric based on SPIDEr that takes into accoun
 [6] S. Liu, Z. Zhu, N. Ye, S. Guadarrama, and K. Murphy, “Improved Image Captioning via Policy Gradient optimization of SPIDEr,” 2017 IEEE International Conference on Computer Vision (ICCV), pp. 873–881, Oct. 2017, arXiv: 1612.00370. [Online]. Available: http://arxiv.org/abs/1612.00370
 
 #### BERTScore
-[7] T. Zhang*, V. Kishore*, F. Wu*, K. Q. Weinberger, and Y. Artzi, “BERTScore: Evaluating Text Generation with BERT,” 2020. [Online]. Available: https://openreview.net/forum?id=SkeHuCVFDr 
+[7] T. Zhang*, V. Kishore*, F. Wu*, K. Q. Weinberger, and Y. Artzi, “BERTScore: Evaluating Text Generation with BERT,” 2020. [Online]. Available: https://openreview.net/forum?id=SkeHuCVFDr
 
 #### SPIDEr-max
 [8] E. Labbé, T. Pellegrini, and J. Pinquier, “Is my automatic audio captioning system so bad? spider-max: a metric to consider several caption candidates,” Nov. 2022. [Online]. Available: https://hal.archives-ouvertes.fr/hal-03810396
@@ -199,19 +217,19 @@ SPIDEr-max [[7]](#spider-max) is a metric based on SPIDEr that takes into accoun
 [10] DCASE website task6a description: https://dcase.community/challenge2023/task-automated-audio-captioning#evaluation
 
 #### CB-score
-[11] I. Martín-Morató, M. Harju, and A. Mesaros, “A Summarization Approach to Evaluating Audio Captioning,” Nov. 2022. [Online]. Available: https://dcase.community/documents/workshop2022/proceedings/DCASE2022Workshop_Martin-Morato_35.pdf 
+[11] I. Martín-Morató, M. Harju, and A. Mesaros, “A Summarization Approach to Evaluating Audio Captioning,” Nov. 2022. [Online]. Available: https://dcase.community/documents/workshop2022/proceedings/DCASE2022Workshop_Martin-Morato_35.pdf
 
 #### SPICE-plus
-[12] F. Gontier, R. Serizel, and C. Cerisara, “SPICE+: Evaluation of Automatic Audio Captioning Systems with Pre-Trained Language Models,” in ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2023, pp. 1–5. doi: 10.1109/ICASSP49357.2023.10097021. 
+[12] F. Gontier, R. Serizel, and C. Cerisara, “SPICE+: Evaluation of Automatic Audio Captioning Systems with Pre-Trained Language Models,” in ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2023, pp. 1–5. doi: 10.1109/ICASSP49357.2023.10097021.
 
 #### ACES
 [13] G. Wijngaard, E. Formisano, B. L. Giordano, M. Dumontier, “ACES: Evaluating Automated Audio Captioning Models on the Semantics of Sounds”, in EUSIPCO 2023, 2023.
 
 #### SBF
-[14] R. Mahfuz, Y. Guo, A. K. Sridhar, and E. Visser, Detecting False Alarms and Misses in Audio Captions. 2023. [Online]. Available: https://arxiv.org/pdf/2309.03326.pdf 
+[14] R. Mahfuz, Y. Guo, A. K. Sridhar, and E. Visser, Detecting False Alarms and Misses in Audio Captions. 2023. [Online]. Available: https://arxiv.org/pdf/2309.03326.pdf
 
 #### s2v
-[15] S. Bhosale, R. Chakraborty, and S. K. Kopparapu, “A Novel Metric For Evaluating Audio Caption Similarity,” in ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2023, pp. 1–5. doi: 10.1109/ICASSP49357.2023.10096526. 
+[15] S. Bhosale, R. Chakraborty, and S. K. Kopparapu, “A Novel Metric For Evaluating Audio Caption Similarity,” in ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2023, pp. 1–5. doi: 10.1109/ICASSP49357.2023.10096526.
 
 ## Citation
 If you use **SPIDEr-max**, you can cite the following paper using BibTex :
@@ -234,10 +252,10 @@ If you use this software, please consider cite it as "Labbe, E. (2013). aac-metr
     Labbe_aac_metrics_2024,
     author = {Labbé, Etienne},
     license = {MIT},
-    month = {01},
+    month = {03},
     title = {{aac-metrics}},
     url = {https://github.com/Labbeti/aac-metrics/},
-    version = {0.5.3},
+    version = {0.5.4},
     year = {2024},
 }
 ```
diff --git a/docs/aac_metrics.utils.imports.rst b/docs/aac_metrics.utils.imports.rst
deleted file mode 100644
index 1e9adfe..0000000
--- a/docs/aac_metrics.utils.imports.rst
+++ /dev/null
@@ -1,7 +0,0 @@
-aac\_metrics.utils.imports module
-=================================
-
-.. automodule:: aac_metrics.utils.imports
-   :members:
-   :undoc-members:
-   :show-inheritance:
diff --git a/docs/aac_metrics.utils.rst b/docs/aac_metrics.utils.rst
index d75b736..0de5e09 100644
--- a/docs/aac_metrics.utils.rst
+++ b/docs/aac_metrics.utils.rst
@@ -16,5 +16,4 @@ Submodules
    aac_metrics.utils.cmdline
    aac_metrics.utils.collections
    aac_metrics.utils.globals
-   aac_metrics.utils.imports
    aac_metrics.utils.tokenization
diff --git a/docs/conf.py b/docs/conf.py
index be57d0e..9717099 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -103,5 +103,5 @@ def setup(app) -> None:
     app.add_css_file("my_theme.css")
 
 
-# TODO: to be used with sphinx>=7.1
+# Only works with sphinx>=7.1
 maximum_signature_line_length = 10
diff --git a/docs/installation.rst b/docs/installation.rst
index d618409..16c554c 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -4,13 +4,13 @@ Installation
 Simply run to install the package:
 
 .. code-block:: bash
-    
+
     pip install aac-metrics
 
 Then download the external tools needed for SPICE, PTBTokenizer, METEOR and FENSE:
 
 .. code-block:: bash
-    
+
     aac-metrics-download
 
 
@@ -26,4 +26,5 @@ The python requirements are automatically installed when using pip on this repos
     pyyaml>=6.0
     tqdm>=4.64.0
     sentence-transformers>=2.2.2
-    transformers<4.31.0
+    transformers
+    packaging
diff --git a/requirements-dev.txt b/requirements-dev.txt
index f6065ae..0caf836 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,11 +1,12 @@
 # -*- coding: utf-8 -*-
 
-pytest==7.1.2
-flake8==4.0.1
 black==22.8.0
-scikit-image==0.19.2
-matplotlib==3.5.2
+flake8==4.0.1
 ipykernel==6.9.1
-twine==4.0.1
+matplotlib==3.5.2
+pre-commit
+pytest==7.1.2
+scikit-image==0.19.2
 sphinx==7.2.6
 sphinx-press-theme==0.8.0
+twine==4.0.1
diff --git a/requirements.txt b/requirements.txt
index 19e52ce..c3fa595 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,10 @@
 # -*- coding: utf-8 -*-
 
-torch>=1.10.1
 numpy>=1.21.2
+packaging>=23
 pyyaml>=6.0
-tqdm>=4.64.0
 sentence-transformers>=2.2.2
-transformers
+torch>=1.10.1
 torchmetrics>=0.11.4
+tqdm>=4.64.0
+transformers
diff --git a/src/aac_metrics/__init__.py b/src/aac_metrics/__init__.py
index e38722c..6299465 100644
--- a/src/aac_metrics/__init__.py
+++ b/src/aac_metrics/__init__.py
@@ -6,20 +6,22 @@
 
 __author__ = "Etienne Labbé (Labbeti)"
 __author_email__ = "labbeti.pub@gmail.com"
+__docs__ = "Audio Captioning Metrics"
+__docs_url__ = "https://aac-metrics.readthedocs.io/en/stable/"
 __license__ = "MIT"
 __maintainer__ = "Etienne Labbé (Labbeti)"
 __name__ = "aac-metrics"
 __status__ = "Development"
-__version__ = "0.5.3"
+__version__ = "0.5.4"
 
 
 from .classes.base import AACMetric
 from .classes.bert_score_mrefs import BERTScoreMRefs
 from .classes.bleu import BLEU
 from .classes.cider_d import CIDErD
-from .classes.evaluate import Evaluate, DCASE2023Evaluate, _get_metric_factory_classes
-from .classes.fer import FER
+from .classes.evaluate import DCASE2023Evaluate, Evaluate, _get_metric_factory_classes
 from .classes.fense import FENSE
+from .classes.fer import FER
 from .classes.meteor import METEOR
 from .classes.rouge_l import ROUGEL
 from .classes.sbert_sim import SBERTSim
@@ -28,7 +30,7 @@
 from .classes.spider_fl import SPIDErFL
 from .classes.spider_max import SPIDErMax
 from .classes.vocab import Vocab
-from .functional.evaluate import evaluate, dcase2023_evaluate
+from .functional.evaluate import dcase2023_evaluate, evaluate
 from .utils.globals import (
     get_default_cache_path,
     get_default_java_path,
@@ -38,7 +40,6 @@
     set_default_tmp_path,
 )
 
-
 __all__ = [
     "AACMetric",
     "BERTScoreMRefs",
diff --git a/src/aac_metrics/functional/bert_score_mrefs.py b/src/aac_metrics/functional/bert_score_mrefs.py
index 2ccdc69..7752579 100644
--- a/src/aac_metrics/functional/bert_score_mrefs.py
+++ b/src/aac_metrics/functional/bert_score_mrefs.py
@@ -4,18 +4,18 @@
 from typing import Callable, Optional, Union
 
 import torch
-
-from torch import nn, Tensor
-from torchmetrics.functional.text.bert import bert_score, _DEFAULT_MODEL
+import torchmetrics
+from packaging.version import Version
+from torch import Tensor, nn
+from torchmetrics.functional.text.bert import _DEFAULT_MODEL, bert_score
+from transformers import logging as tfmers_logging
 from transformers.models.auto.modeling_auto import AutoModel
 from transformers.models.auto.tokenization_auto import AutoTokenizer
-from transformers import logging as tfmers_logging
 
 from aac_metrics.utils.checks import check_metric_inputs
-from aac_metrics.utils.collections import flat_list, unflat_list, duplicate_list
+from aac_metrics.utils.collections import duplicate_list, flat_list, unflat_list
 from aac_metrics.utils.globals import _get_device
 
-
 DEFAULT_BERT_SCORE_MODEL = _DEFAULT_MODEL
 REDUCTIONS = ("mean", "max", "min")
 
@@ -32,7 +32,7 @@ def bert_score_mrefs(
     max_length: int = 64,
     reset_state: bool = True,
     idf: bool = False,
-    reduction: Union[str, Callable[[Tensor, ...], Tensor]] = "max",
+    reduction: Union[str, Callable[..., Tensor]] = "max",
     filter_nan: bool = True,
     verbose: int = 0,
 ) -> Union[tuple[dict[str, Tensor], dict[str, Tensor]], Tensor]:
@@ -144,9 +144,16 @@ def bert_score_mrefs(
         reduction_fn = reduction
 
     if len(sizes) > 0 and all(size == sizes[0] for size in sizes):
-        sents_scores = {
-            k: reduction_fn(torch.stack(v), dim=1) for k, v in sents_scores.items()
-        }
+        torchmetrics_version = Version(torchmetrics.__version__)
+        if torchmetrics_version < Version("1.0.0"):
+            # backward compatibility
+            sents_scores = {
+                k: reduction_fn(torch.as_tensor(v, dtype=dtype), dim=1) for k, v in sents_scores.items()  # type: ignore
+            }
+        else:
+            sents_scores = {
+                k: reduction_fn(torch.stack(v), dim=1) for k, v in sents_scores.items()  # type: ignore
+            }
     else:
         sents_scores = {
             k: torch.stack([reduction_fn(torch.as_tensor(vi, dtype=dtype)) for vi in v])
diff --git a/src/aac_metrics/functional/evaluate.py b/src/aac_metrics/functional/evaluate.py
index 772b1d5..227e78a 100644
--- a/src/aac_metrics/functional/evaluate.py
+++ b/src/aac_metrics/functional/evaluate.py
@@ -3,13 +3,11 @@
 
 import logging
 import time
-
-from functools import partial
+from functools import cache, partial
 from pathlib import Path
 from typing import Any, Callable, Iterable, Optional, Union
 
 import torch
-
 from torch import Tensor
 
 from aac_metrics.functional.bert_score_mrefs import bert_score_mrefs
@@ -28,7 +26,6 @@
 from aac_metrics.utils.checks import check_metric_inputs
 from aac_metrics.utils.tokenization import preprocess_mono_sents, preprocess_mult_sents
 
-
 pylog = logging.getLogger(__name__)
 
 
@@ -155,8 +152,8 @@ def evaluate(
                 set(outs_sents_i.keys()).intersection(outs_sents.keys())
             )
             if len(corpus_overlap) > 0 or len(sents_overlap) > 0:
-                pylog.warning(
-                    f"Found overlapping metric outputs names. (found {corpus_overlap=} and {sents_overlap=})"
+                warn_once(
+                    f"Found overlapping metric outputs names. (found {corpus_overlap=} and {sents_overlap=} at least twice)"
                 )
 
         outs_corpus |= outs_corpus_i
@@ -352,3 +349,8 @@ def _get_metric_factory_functions(
         ),
     }
     return factory
+
+
+@cache
+def warn_once(msg: str) -> None:
+    pylog.warning(msg)
diff --git a/src/aac_metrics/utils/checks.py b/src/aac_metrics/utils/checks.py
index cf86afc..6a5d27a 100644
--- a/src/aac_metrics/utils/checks.py
+++ b/src/aac_metrics/utils/checks.py
@@ -2,18 +2,16 @@
 # -*- coding: utf-8 -*-
 
 import logging
-import re
 import subprocess
-
 from pathlib import Path
 from subprocess import CalledProcessError
 from typing import Any, Union
-from typing_extensions import TypeGuard
 
+from packaging.version import Version
+from typing_extensions import TypeGuard
 
 pylog = logging.getLogger(__name__)
 
-VERSION_PATTERN = r"(?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+).*"
 MIN_JAVA_MAJOR_VERSION = 8
 MAX_JAVA_MAJOR_VERSION = 13
 
@@ -103,18 +101,12 @@ def _get_java_version(java_path: str) -> str:
     return version
 
 
-def _check_java_version(version: str, min_major: int, max_major: int) -> bool:
-    result = re.match(VERSION_PATTERN, version)
-    if result is None:
-        raise ValueError(
-            f"Invalid Java version {version=}. (expected version with pattern={VERSION_PATTERN})"
-        )
-
-    major_version = int(result["major"])
-    minor_version = int(result["minor"])
+def _check_java_version(version_str: str, min_major: int, max_major: int) -> bool:
+    version = Version(version_str)
 
-    if major_version == 1 and minor_version <= 8:
-        # java <= 8 use versioning "1.MAJOR.MINOR" and > 8 use "MAJOR.MINOR.PATCH"
-        major_version = minor_version
+    if version.major == 1 and version.minor <= 8:
+        # java <= 8 use versioning "1.MAJOR.MINOR" and > 8 use "MAJOR.MINOR.MICRO"
+        version_str = ".".join(map(str, (version.minor, version.micro)))
+        version = Version(version_str)
 
-    return min_major <= major_version <= max_major
+    return Version(f"{min_major}") <= version < Version(f"{max_major + 1}")
diff --git a/src/aac_metrics/utils/imports.py b/src/aac_metrics/utils/imports.py
deleted file mode 100644
index 98a93c4..0000000
--- a/src/aac_metrics/utils/imports.py
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-from functools import cache
-from importlib.util import find_spec
-
-
-@cache
-def _package_is_available(package_name: str) -> bool:
-    """Returns True if package is installed in the current python environment."""
-    try:
-        return find_spec(package_name) is not None
-    except AttributeError:
-        # Python 3.6
-        return False
-    except (ImportError, ModuleNotFoundError):
-        # Python 3.7+
-        return False
-
-
-_TORCHMETRICS_AVAILABLE: bool = _package_is_available("torchmetrics")
diff --git a/tests/test_bleu_tchmet.py b/tests/test_bleu_tchmet.py
index 0858548..13563e6 100644
--- a/tests/test_bleu_tchmet.py
+++ b/tests/test_bleu_tchmet.py
@@ -2,22 +2,17 @@
 # -*- coding: utf-8 -*-
 
 import unittest
-
 from unittest import TestCase
 
-from aac_metrics.classes.bleu import BLEU
-from aac_metrics.utils.imports import _TORCHMETRICS_AVAILABLE
+from torch import Tensor
+from torchmetrics.text.bleu import BLEUScore
 
-if _TORCHMETRICS_AVAILABLE:
-    from torchmetrics.text.bleu import BLEUScore
+from aac_metrics.classes.bleu import BLEU
 
 
 class TestBleu(TestCase):
     # Tests methods
     def test_bleu(self) -> None:
-        if not _TORCHMETRICS_AVAILABLE:
-            return None
-
         cands = ["a man is speaking", "birds chirping"]
         mrefs = [
             [