diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 83cf615f..b3da5099 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,6 +1,7 @@
 name: Build and deploy (test)
 
 on:
+  workflow_dispatch:
   push:
     branches:
       - "test"
@@ -12,7 +13,6 @@ on:
       - '*.example'
       - 'netlify.toml'
       - '*.md'
-  workflow_dispatch:
 
 jobs:
   deploy:
diff --git a/README.md b/README.md
index 4949752a..7e95d88a 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # CartoBio
 
-Application de suivi et de certificaton du parcellaire bio à destination des _opérateurs bio_[^1] et aux _organismes de certification_.
+Application de suivi et de certificaton du parcellaire bio à destination des _opérateurs bio_[^1] et des _organismes de certification_.
 
 Cette application implémente [la maquette Figma CartoBio][maquette-figma] ainsi que le [Système de Design de l'État](https://www.systeme-de-design.gouv.fr/) avec [Vue 3], [Vue Router], [Vue Pages] et [Pinia].
 
diff --git a/package-lock.json b/package-lock.json
index 5b85bb93..563ccad6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@agencebio/cartobio-front",
-  "version": "2.25.6",
+  "version": "2.26.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@agencebio/cartobio-front",
-      "version": "2.25.6",
+      "version": "2.26.0",
       "dependencies": {
         "@agencebio/rosetta-cultures": "^2.1.0",
         "@algolia/autocomplete-js": "^1.8.3",
@@ -34,7 +34,7 @@
         "vue-matomo": "^4.1.0",
         "vue-router": "^4.0.12",
         "vue3-toastify": "^0.1.11",
-        "xlsx": "git+https://git.sheetjs.com/sheetjs/sheetjs.git#semver:^v0.20.2"
+        "xlsx": "git+https://git.sheetjs.com/sheetjs/sheetjs.git"
       },
       "devDependencies": {
         "@agencebio/cartobio-types": "^1.6.1",
@@ -12328,9 +12328,8 @@
       }
     },
     "node_modules/xlsx": {
-      "version": "0.20.2",
-      "resolved": "git+https://git.sheetjs.com/sheetjs/sheetjs.git#a0bed2a97dcb1e3b76049be91abf3747f333c975",
-      "license": "Apache-2.0",
+      "version": "0.20.3",
+      "resolved": "git+https://git.sheetjs.com/sheetjs/sheetjs.git#2669c7cf1c8a119f667d2d58c183c35073bb6e2f",
       "bin": {
         "xlsx": "bin/xlsx.njs"
       },
diff --git a/package.json b/package.json
index 8a941658..eb23e54d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@agencebio/cartobio-front",
-  "version": "2.25.6",
+  "version": "2.26.0",
   "private": true,
   "type": "module",
   "scripts": {
@@ -47,7 +47,7 @@
     "vue-matomo": "^4.1.0",
     "vue-router": "^4.0.12",
     "vue3-toastify": "^0.1.11",
-    "xlsx": "git+https://git.sheetjs.com/sheetjs/sheetjs.git#semver:^v0.20.2"
+    "xlsx": "git+https://git.sheetjs.com/sheetjs/sheetjs.git"
   },
   "devDependencies": {
     "@agencebio/cartobio-types": "^1.6.1",
diff --git a/src/components/forms/EditVersionForm.vue b/src/components/forms/EditVersionForm.vue
index 6887a9e9..856150ac 100644
--- a/src/components/forms/EditVersionForm.vue
+++ b/src/components/forms/EditVersionForm.vue
@@ -21,9 +21,19 @@ useFocus(autofocusedElement, { initialValue: true })
 const patch = reactive({
   version_name: record.version_name,
   audit_date: record.audit_date,
+  certification_date_debut: record.certification_date_debut,
   certification_date_fin: record.certification_date_fin
 })
 
+const datesCertificationConflict = computed(() => {
+  if (!patch.certification_date_debut || !patch.certification_date_fin) {
+    return false;
+  }
+  const debutCertificationDate = new Date(patch.certification_date_debut)
+  const finCertificationDate = new Date(patch.certification_date_fin)
+  return debutCertificationDate >= finCertificationDate
+})
+
 const dateConflict = computed(() => {
   let newDate
   try {
@@ -38,6 +48,7 @@ function save() {
   recordStore.updateInfo({
     version_name: patch.version_name,
     ...(patch.audit_date && { audit_date: patch.audit_date }),
+    ...(patch.certification_date_debut && { certification_date_debut: patch.certification_date_debut }),
     ...(patch.certification_date_fin && { certification_date_fin: patch.certification_date_fin })
   })
 
@@ -79,19 +90,25 @@ function save() {
 
       <div v-if="record.certification_state === 'CERTIFIED' && permissions.canChangeCertificationDate" class="fr-input-group">
         <label for="certification_date_debut" class="fr-input-group__label">Date de début de validité du certificat</label>
-        <input type="date" id="certification_date_debut" class="fr-input" :value="record.certification_date_debut" />
+        <input type="date" id="certification_date_debut" class="fr-input" v-model="patch.certification_date_debut" required />
       </div>
 
       <div v-if="record.certification_state === 'CERTIFIED' && permissions.canChangeCertificationDate" class="fr-input-group">
         <label for="certification_date_fin" class="fr-input-group__label">Date de fin de validité du certificat</label>
-        <input type="date" id="certification_date_fin" class="fr-input" v-model="patch.certification_date_fin" />
+        <input type="date" id="certification_date_fin" class="fr-input" v-model="patch.certification_date_fin" required />
+      </div>
+
+      <div v-if="datesCertificationConflict" class="fr-alert fr-alert--error fr-mb-2w">
+        <p class="fr-text--sm">
+          La date de début de validé du certificat doit être antérieure à la date de fin de validité de celui-ci.
+        </p>
       </div>
     </form>
 
     <template #footer>
       <ul class="fr-btns-group fr-btns-group--inline">
         <li>
-          <button type="submit" class="fr-btn" form="version-edit-form" :disabled="dateConflict">Enregistrer</button>
+          <button type="submit" class="fr-btn" form="version-edit-form" :disabled="dateConflict || datesCertificationConflict">Enregistrer</button>
         </li>
         <li>
           <button class="fr-btn fr-btn--tertiary" @click="$emit('close')">Annuler</button>
diff --git a/src/components/records/Header.test.js b/src/components/records/Header.test.js
index 79ab25b2..35602a59 100644
--- a/src/components/records/Header.test.js
+++ b/src/components/records/Header.test.js
@@ -5,6 +5,7 @@ import { createTestingPinia } from "@pinia/testing"
 import { useOperatorStore } from "@/stores/operator.js"
 import { useRecordStore } from "@/stores/record.js"
 import { useUserStore } from "@/stores/user.js"
+import axios from "axios"
 
 import operator from '@/utils/__fixtures__/operator.json' assert { type: 'json' }
 import record from '@/utils/__fixtures__/record-with-features.json' assert { type: 'json' }
@@ -26,6 +27,7 @@ describe("RecordHeader", () => {
   beforeEach(() => {
     recordStore.update(record)
     operatorStore.operator = operator
+    axios.__createMock.patch.mockResolvedValue({ data: record })
   })
 
   afterEach(() => {
@@ -54,7 +56,7 @@ describe("RecordHeader", () => {
       expect(modal.find('#version_name').exists()).toBe(true)
     })
 
-    it("should only allow Certification Body after", async () => {
+    it("should allow Certification Body after audit only for OC and without certification dates", async () => {
       recordStore.update({ certification_state: 'AUDITED', audit_date: '2024-01-01' })
       userStore.isOc = false
       userStore.isOcCertif = false
@@ -69,6 +71,47 @@ describe("RecordHeader", () => {
       await flushPromises()
       const modal = wrapper.getComponent(EditVersionModal)
       expect(modal.find('#audit_date').exists()).toBe(true)
+      expect(modal.find('#certification_date_debut').exists()).toBe(false)
+      expect(modal.find('#certification_date_fin').exists()).toBe(false)
+    })
+
+    it("should allow Certification Body after certification only for OC and with certification dates and save it", async () => {
+      recordStore.update({ certification_state: 'CERTIFIED', audit_date: '2024-01-01',
+        certification_date_debut: '2024-02-01', certification_date_fin: '2025-02-01' })
+      userStore.isOc = false
+      userStore.isOcCertif = false
+      let wrapper = mount(AsyncComponent)
+      await flushPromises()
+      expect(await wrapper.find('.edit-version-info').exists()).toBe(false)
+
+      userStore.isOc = true
+      userStore.isOcCertif = true
+      wrapper = mount(AsyncComponent)
+      await wrapper.find('.edit-version-info').trigger('click')
+      await flushPromises()
+
+      const modal = wrapper.getComponent(EditVersionModal)
+      expect(modal.find('#audit_date').exists()).toBe(true)
+      expect(modal.find('#certification_date_debut').exists()).toBe(true)
+      expect(modal.find('#certification_date_fin').exists()).toBe(true)
+
+      const newCertificationDateDebut = '2026-02-01'
+      const newCertificationDateFin = '2027-02-01'
+      await modal.find('#certification_date_debut').setValue(newCertificationDateDebut)
+      await modal.find('#certification_date_fin').setValue(newCertificationDateFin)
+      await modal.find('form').trigger('submit')
+      await flushPromises()
+
+      expect(axios.__createMock.patch).toHaveBeenCalledWith(
+        '/v2/audits/054f0d70-c3da-448f-823e-81fcf7c2bf6e',
+        {
+          audit_date: '2024-01-01',
+          certification_date_debut: newCertificationDateDebut,
+          certification_date_fin: newCertificationDateFin,
+          "version_name": "Version créée le 01/01/2024"
+        },
+        expect.anything()
+      )
     })
   })