diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index dd5f95c8..81114139 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -6,7 +6,7 @@ repos:
   - id: check-toml
   - id: check-merge-conflict
 - repo: https://github.com/astral-sh/ruff-pre-commit
-  rev: v0.7.3
+  rev: v0.8.4
   hooks:
   - id: ruff
     args: [--fix, --show-fixes]
@@ -21,7 +21,7 @@ repos:
   - id: pretty-format-toml
     args: [--autofix]
 - repo: https://github.com/pre-commit/mirrors-mypy
-  rev: v1.13.0
+  rev: v1.14.0
   hooks:
   - id: mypy
     args: [--strict, --ignore-missing-imports]
@@ -50,13 +50,13 @@ repos:
     types: [jupyter]
     additional_dependencies: [nbformat]
 - repo: https://github.com/executablebooks/mdformat
-  rev: 0.7.18
+  rev: 0.7.21
   hooks:
   - id: mdformat
     additional_dependencies:
     - mdformat-gfm
 - repo: https://github.com/kynan/nbstripout
-  rev: 0.8.0
+  rev: 0.8.1
   hooks:
   - id: nbstripout
     args: [--drop-empty-cells, --keep-count, --keep-output, --extra-keys, metadata.kernelspec]
diff --git a/README.md b/README.md
index c6fe7892..585b3d8b 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,9 @@
 # c3s2-eqc-quality-assessment
 
-> \[!WARNING\]
+> [!WARNING]
 > Please note that this repository is used for development and review, so quality assessments should be considered work in progress until they are merged into the main branch
 
-> \[!NOTE\]\
+> [!NOTE]
 > If anything is unclear with the templates, or if you encounter any problems, please report them at [GH164](https://github.com/ecmwf-projects/c3s2-eqc-quality-assessment/issues/164).
 
 ## Quick start
diff --git a/scripts/pre-build.py b/scripts/pre-build.py
index bde64c97..9d794a53 100644
--- a/scripts/pre-build.py
+++ b/scripts/pre-build.py
@@ -16,7 +16,7 @@ def get_disclaimer(readme: Path) -> str:
     lines = readme.open()
     disclaimer = ['<div class="alert alert-block alert-warning">']
     for line in lines:
-        if line.startswith(r"> \[!WARNING\]"):
+        if line.startswith("> [!WARNING]"):
             for line in lines:
                 if line.startswith(">"):
                     disclaimer.append(line.removeprefix(">").strip())
diff --git a/scripts/validate-headings.py b/scripts/validate-headings.py
index 491e27e6..94ebeddf 100644
--- a/scripts/validate-headings.py
+++ b/scripts/validate-headings.py
@@ -20,6 +20,7 @@ def validate_headers(path: Path) -> None:
 
     title_count = 0
     admonition_count = 0
+    admonition_is_note = False
     headings_count = dict.fromkeys(HEADINGS, 0)
     for cell in notebook.cells:
         if cell["cell_type"] != "markdown":
@@ -32,6 +33,9 @@ def validate_headers(path: Path) -> None:
                 title_count += 1
             elif line == f"```{{admonition}} {ADMONITION_TITLE}":
                 admonition_count += 1
+            elif admonition_count and not admonition_is_note:
+                admonition_is_note = line.startswith(":class: note")
+                assert admonition_is_note, f"{path=!s}: The admonition is not a note"
 
             if not path.name.startswith("template"):
                 assert title_count, f"{path=!s}: The first line is not a title."