diff --git a/manuels/admin.py b/manuels/admin.py
index 8fc32d4..a339da7 100644
--- a/manuels/admin.py
+++ b/manuels/admin.py
@@ -3,7 +3,7 @@ from import_export import resources, fields
 from import_export.admin import ExportMixin
 from import_export.widgets import IntegerWidget, DecimalWidget
 
-from manuels.models import Teacher, Book, Level, Editor, SuppliesRequirement, CommonSupply
+from manuels.models import Teacher, Book, Level, Editor, SuppliesRequirement, CommonSupply, ISBNError
 
 
 class TeacherResource(resources.ModelResource):
@@ -126,6 +126,24 @@ class BookAdmin(ExportMixin, admin.ModelAdmin):
     ]
     readonly_fields = ['created_at', 'updated_at']
 
+    def update_with_decitre(self, request, queryset):
+        for book in queryset:
+            try:
+                book.update_from_decitre()
+                messages.success(
+                    request,
+                    f'Mise à jour réussie du livre "{book.title}" ({book.level.name} - {book.field})'
+                )
+            except ISBNError as e:
+                messages.warning(
+                    request,
+                    f'Erreur lors de la mise à jour du livre "{book.title}" ({book.level.name} - {book.field}) : {e.data.get("error")}'
+                )
+
+    update_with_decitre.short_description = 'Mettre à jour avec Decitre'
+
+    actions = [update_with_decitre]
+
 
 @admin.register(Editor)
 class EditorAdmin(admin.ModelAdmin):
diff --git a/manuels/models.py b/manuels/models.py
index 3fe6a15..7863d21 100644
--- a/manuels/models.py
+++ b/manuels/models.py
@@ -1,8 +1,10 @@
+import logging
 import os
 import re
-
 import uuid as uuid
 
+import bs4
+import requests
 from django.conf import settings
 from django.contrib.postgres.fields import CIEmailField
 from django.core.exceptions import ValidationError
@@ -12,6 +14,15 @@ from django.db.models import Sum
 from django.template.loader import render_to_string
 from django.urls import reverse
 
+from manuels.utils import validate_isbn
+
+logger = logging.getLogger(__name__)
+
+
+class ISBNError(Exception):
+    def __init__(self, data):
+        self.data = data
+
 
 class BaseModel(models.Model):
     class Meta:
@@ -246,6 +257,102 @@ class Book(BaseModel):
         from django.urls import reverse
         return reverse('edit_book', kwargs={'teacher_pk': str(self.teacher.pk), 'pk': str(self.pk)})
 
+    def update_from_decitre(self):
+        decitre_data = self.fetch_from_decitre(self.isbn)
+        self.title = decitre_data.get('title')
+        self.authors = decitre_data.get('authors')
+        self.price = decitre_data.get('price')
+        self.publication_year = decitre_data.get('year')
+        editor = decitre_data.get('editor')
+        try:
+            self.editor = Editor.objects.get(name__icontains=editor)
+        except Editor.DoesNotExist:
+            self.editor = Editor.objects.get(name__istartswith='autre')
+
+        self.save()
+
+    @staticmethod
+    def fetch_from_decitre(isbn: str):
+        isbn = isbn.strip().replace('-', '')
+
+        if not validate_isbn(isbn):
+            raise ISBNError({
+                'error': "L'ISBN saisi n'est pas valide."
+            })
+
+        if len(isbn) == 10:
+            raise ISBNError({
+                'error': "La recherche sur Decitre ne fonctionne qu'avec un ISBN 13 (ou EAN)."
+            })
+
+        try:
+            res = requests.get(f'https://www.decitre.fr/livres/{isbn}.html', timeout=10)
+        except requests.exceptions.Timeout as exc:
+            raise ISBNError({
+                'error': "Decitre n'a pas répondu dans les temps. Message : {}".format(str(exc))
+            })
+
+        try:
+            res.raise_for_status()
+        except Exception as exc:
+            message = (
+                "Erreur lors de la recherche. Il se peut que le livre n'existe pas dans la base de connaissances "
+                "de Decitre ou que vous ayez mal saisi l'ISBN. Vous pouvez toujours saisir "
+                "les informations du livre à la main. Message : {}").format(str(exc))
+            raise ISBNError({
+                'error': message
+            })
+
+        decitre_soup = bs4.BeautifulSoup(res.text, "html.parser")
+        title = decitre_soup.select('h1.product-title')
+        if title:
+            title = title[0]
+            if title.span:
+                title.span.extract()
+            title = title.get_text(strip=True)
+
+        authors = decitre_soup.select('.authors')
+        if authors:
+            authors = authors[0]
+            authors = authors.get_text(strip=True)
+
+        price = decitre_soup.select('div.price span.final-price')
+        if price:
+            price = price[0]
+            price = price.get_text().replace('€', '').replace(',', '.').strip()
+
+        year = None
+        editor = None
+        extra_info = decitre_soup.select('.informations-container')
+        logger.debug('raw extra_info')
+        logger.debug(extra_info)
+        if not extra_info:
+            logger.debug('#fiche-technique')
+            extra_info = decitre_soup.select('#fiche-technique')
+            logger.debug('raw extra_info fiche technique')
+            logger.debug(extra_info)
+
+        if extra_info:
+            extra_info = extra_info[0].get_text(strip=True)
+            logger.debug('extra_info')
+            logger.debug(extra_info)
+            matches = re.search(
+                r'Date de parution(?: :)?\d{2}/\d{2}/(?P<year>\d{4})Editeur(?: :)?(?P<editor>.+?)(?:ISBN|Collection)',
+                extra_info)
+            if matches:
+                groups = matches.groupdict()
+                year = groups.get('year')
+                editor = groups.get('editor').strip()
+
+        return {
+            'title': title,
+            'authors': authors,
+            'isbn': isbn,
+            'price': float(price) if price else None,
+            'year': year,
+            'editor': editor,
+        }
+
 
 class SuppliesRequirement(BaseModel):
     class Meta:
diff --git a/manuels/utils.py b/manuels/utils.py
new file mode 100644
index 0000000..d527490
--- /dev/null
+++ b/manuels/utils.py
@@ -0,0 +1,21 @@
+def validate_isbn(isbn):
+    _sum = 0
+    if len(isbn) == 10:
+        for i, digit in enumerate(isbn):
+            if digit == 'X':
+                digit = 10
+            else:
+                digit = int(digit)
+            _sum += digit * (i + 1)
+
+        return _sum % 11 == 0
+
+    elif len(isbn) == 13:
+        for i, digit in enumerate(isbn):
+            weight = 3 if i % 2 == 1 else 1
+            digit = int(digit)
+            _sum += digit * weight
+
+        return _sum % 10 == 0
+
+    return False
diff --git a/manuels/views.py b/manuels/views.py
index 855f03f..88df650 100644
--- a/manuels/views.py
+++ b/manuels/views.py
@@ -11,7 +11,8 @@ from django.views.decorators.cache import cache_page
 from django.views.generic import CreateView, UpdateView, DeleteView, TemplateView
 
 from manuels.forms import AddBookForm, AddSuppliesForm, EditBookForm, EditSuppliesForm
-from manuels.models import Teacher, Book, SuppliesRequirement, CommonSupply
+from manuels.models import Teacher, Book, SuppliesRequirement, CommonSupply, ISBNError
+from manuels.utils import validate_isbn
 
 logger = logging.getLogger(__name__)
 
@@ -245,105 +246,10 @@ class ConfirmTeacherView(BaseTeacherView, UpdateView):
         return response
 
 
-def validate_isbn(isbn):
-    _sum = 0
-    if len(isbn) == 10:
-        for i, digit in enumerate(isbn):
-            if digit == 'X':
-                digit = 10
-            else:
-                digit = int(digit)
-            _sum += digit * (i + 1)
-
-        return _sum % 11 == 0
-
-    elif len(isbn) == 13:
-        for i, digit in enumerate(isbn):
-            weight = 3 if i % 2 == 1 else 1
-            digit = int(digit)
-            _sum += digit * weight
-
-        return _sum % 10 == 0
-
-    return False
-
-
 # We are able to cache the response because it's very unlikely that the details of a book will change through time
 @cache_page(2 * 60 * 60)
 def isbn_api(request, isbn):
-    isbn = isbn.strip().replace('-', '')
-
-    if not validate_isbn(isbn):
-        return JsonResponse({
-            'error': "L'ISBN saisi n'est pas valide."
-        })
-
-    if len(isbn) == 10:
-        return JsonResponse({
-            'error': "La recherche sur Decitre ne fonctionne qu'avec un ISBN 13 (ou EAN)."
-        })
-
     try:
-        res = requests.get(f'https://www.decitre.fr/livres/{isbn}.html', timeout=10)
-    except requests.exceptions.Timeout as exc:
-        return JsonResponse({
-            'error': "Decitre n'a pas répondu dans les temps. Message : {}".format(str(exc))
-        })
-
-    try:
-        res.raise_for_status()
-    except Exception as exc:
-        message = ("Erreur lors de la recherche. Il se peut que le livre n'existe pas dans la base de connaissances "
-                   "de Decitre ou que vous ayez mal saisi l'ISBN. Vous pouvez toujours saisir "
-                   "les informations du livre à la main. Message : {}").format(str(exc))
-        return JsonResponse({
-            'error': message
-        })
-
-    decitre_soup = bs4.BeautifulSoup(res.text, "html.parser")
-    title = decitre_soup.select('h1.product-title')
-    if title:
-        title = title[0]
-        if title.span:
-            title.span.extract()
-        title = title.get_text(strip=True)
-
-    authors = decitre_soup.select('.authors')
-    if authors:
-        authors = authors[0]
-        authors = authors.get_text(strip=True)
-
-    price = decitre_soup.select('div.price span.final-price')
-    if price:
-        price = price[0]
-        price = price.get_text().replace('€', '').replace(',', '.').strip()
-
-    year = None
-    editor = None
-    extra_info = decitre_soup.select('.informations-container')
-    logger.debug('raw extra_info')
-    logger.debug(extra_info)
-    if not extra_info:
-        logger.debug('#fiche-technique')
-        extra_info = decitre_soup.select('#fiche-technique')
-        logger.debug('raw extra_info fiche technique')
-        logger.debug(extra_info)
-
-    if extra_info:
-        extra_info = extra_info[0].get_text(strip=True)
-        logger.debug('extra_info')
-        logger.debug(extra_info)
-        matches = re.search(r'Date de parution(?: :)?\d{2}/\d{2}/(?P<year>\d{4})Editeur(?: :)?(?P<editor>.+?)(?:ISBN|Collection)', extra_info)
-        if matches:
-            groups = matches.groupdict()
-            year = groups.get('year')
-            editor = groups.get('editor').strip()
-
-    return JsonResponse({
-        'title': title,
-        'authors': authors,
-        'isbn': isbn,
-        'price': float(price) if price else None,
-        'year': year,
-        'editor': editor,
-    })
+        return JsonResponse(Book.fetch_from_decitre(isbn))
+    except ISBNError as e:
+        return JsonResponse(e.data)