diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 412288c..6bbf2ed 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -14,7 +14,7 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/pre-commit/mirrors-clang-format
-    rev: v19.1.3
+    rev: v19.1.7
     hooks:
       - id: clang-format
 
@@ -25,7 +25,7 @@ repos:
         additional_dependencies: [pyyaml]
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.7.4
+    rev: v0.9.4
     hooks:
       - id: ruff
         args: ["--fix", "--show-fixes"]
diff --git a/viewer/feminos-viewer.py b/viewer/feminos-viewer.py
index ab8f2c7..d8fd49f 100755
--- a/viewer/feminos-viewer.py
+++ b/viewer/feminos-viewer.py
@@ -1769,9 +1769,9 @@ def __init__(self, _root):
         )
         self.readout_menu.pack(side=tk.LEFT, padx=20, pady=5)
         self.selected_readout.set("IAXO-D1")
-        assert (
-            self.selected_readout.get() in readouts
-        ), f"Invalid readout {self.selected_readout.get()}. Available readouts are {readouts.keys()}"
+        assert self.selected_readout.get() in readouts, (
+            f"Invalid readout {self.selected_readout.get()}. Available readouts are {readouts.keys()}"
+        )
         self.readout_signal_ids = set(readouts[self.readout]["mapping"].keys())
 
         self.auto_update_variable = tk.BooleanVar()
@@ -2315,9 +2315,9 @@ def plot_event_time(self):
             baseline_sigma = np.std(values[:baseline_factor])
 
             signal_type = readouts[self.readout]["mapping"][int(signal_id)][0]
-            assert (
-                len(values) == 512
-            ), f"Signal {signal_id} has {len(values)} bins, not 512"
+            assert len(values) == 512, (
+                f"Signal {signal_id} has {len(values)} bins, not 512"
+            )
             for i in range(len(values)):
                 value = values[i]
                 if not value > baseline_level + 2.0 * baseline_sigma: