diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f59d83f5..b921b70d 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -19,7 +19,7 @@ repos:
   - id: end-of-file-fixer
 
 - repo: https://github.com/astral-sh/ruff-pre-commit
-  rev: "v0.5.7"
+  rev: "v0.6.1"
   hooks:
     - id: ruff
       args: ["--fix", "--show-fixes"]
diff --git a/src/decaylanguage/dec/dec.py b/src/decaylanguage/dec/dec.py
index 07af2ce2..503d1b30 100644
--- a/src/decaylanguage/dec/dec.py
+++ b/src/decaylanguage/dec/dec.py
@@ -934,8 +934,7 @@ def print_decay_modes(
                 "" if model_params_list == [] else " ".join(model_params_list)
             )
             decay_chain: str = " ".join(list(dmdict["fs"]))  # type: ignore[arg-type]
-            if len(decay_chain) > max_length:
-                max_length = len(decay_chain)
+            max_length = max(len(decay_chain), max_length)
             ls.append((dmdict["bf"], decay_chain, dmdict["model"], model_params))
 
         # Sort decays by decreasing BF
diff --git a/tests/decay/test_decay.py b/tests/decay/test_decay.py
index 1525d3cc..8fa205d1 100644
--- a/tests/decay/test_decay.py
+++ b/tests/decay/test_decay.py
@@ -245,7 +245,7 @@ def test_DecayMode_number_of_final_states():
     assert len(dm) == 4
 
 
-@pytest.fixture()
+@pytest.fixture
 def dc():
     dm1 = DecayMode(0.0124, "K_S0 pi0", model="PHSP")
     dm2 = DecayMode(0.692, "pi+ pi-")
@@ -253,7 +253,7 @@ def dc():
     return DecayChain("D0", {"D0": dm1, "K_S0": dm2, "pi0": dm3})
 
 
-@pytest.fixture()
+@pytest.fixture
 def dc2():
     dm1 = DecayMode(0.6770, "D0 pi+")
     dm2 = DecayMode(0.0124, "K_S0 pi0")
diff --git a/tests/test_dec_full.py b/tests/test_dec_full.py
index 7e7e38bc..f3cc92c0 100644
--- a/tests/test_dec_full.py
+++ b/tests/test_dec_full.py
@@ -96,7 +96,7 @@ def particle(self, items):
             return str(label)
 
 
-@pytest.mark.skip()
+@pytest.mark.skip
 def test_dec_full():
     txt = data.basepath.joinpath("DECAY_LHCB.DEC").read_text()
     grammar = data.basepath.joinpath("decfile.lark").read_text()