diff --git a/lang/en.json b/lang/en.json
index 42d0864..d0a14d9 100644
--- a/lang/en.json
+++ b/lang/en.json
@@ -376,6 +376,8 @@
     "evolution_dice": "Evolution dice",
     "open_experience_phase": "Experience phase",
     "open_learning": "Learning",
+    "validate_phase": "Validate phase",
+    "validate_phase_done": "Experience phase validated: learning limits reset.",
     "learning_limits": "Learning limits (per phase)",
     "learned_skill": "Skill",
     "learned_specialty": "Specialty",
diff --git a/lang/fr.json b/lang/fr.json
index 61a7cfe..2cfbbcb 100644
--- a/lang/fr.json
+++ b/lang/fr.json
@@ -359,6 +359,8 @@
     "evolution_dice": "Dés d'Évolution",
     "open_experience_phase": "Phase d'Expérience",
     "open_learning": "Apprentissage",
+    "validate_phase": "Valider la phase",
+    "validate_phase_done": "Phase d'Expérience validée : limites d'apprentissage réinitialisées.",
     "learning_limits": "Limites d'apprentissage (par phase)",
     "learned_skill": "Compétence",
     "learned_specialty": "Spécialité",
diff --git a/module/applications/sheets/character-sheet.mjs b/module/applications/sheets/character-sheet.mjs
index 60aed07..a5e87f0 100644
--- a/module/applications/sheets/character-sheet.mjs
+++ b/module/applications/sheets/character-sheet.mjs
@@ -9,7 +9,8 @@ export default class VermineCharacterSheetV2 extends VermineBaseActorSheet {
     actions: {
       addSpecialty: VermineCharacterSheetV2.#onAddSpecialty,
       openExperiencePhase: VermineCharacterSheetV2.#onOpenExperiencePhase,
-      openLearning: VermineCharacterSheetV2.#onOpenLearning
+      openLearning: VermineCharacterSheetV2.#onOpenLearning,
+      validatePhase: VermineCharacterSheetV2.#onValidatePhase
     }
   }
 
@@ -125,4 +126,11 @@ export default class VermineCharacterSheetV2 extends VermineBaseActorSheet {
     const dialog = await LearningDialog.create({ actorId: this.document.id })
     if (dialog) dialog.render(true)
   }
+
+  /** Valide la phase d'Expérience courante et réinitialise les limites. */
+  static async #onValidatePhase() {
+    const { VermineExperience } = await import("../../system/experience.mjs")
+    await VermineExperience.completePhase(this.document)
+    ui.notifications.info(game.i18n.localize("VERMINE.validate_phase_done"))
+  }
 }
diff --git a/module/applications/sheets/group-sheet.mjs b/module/applications/sheets/group-sheet.mjs
index c1e3dcb..a89eaab 100644
--- a/module/applications/sheets/group-sheet.mjs
+++ b/module/applications/sheets/group-sheet.mjs
@@ -15,7 +15,8 @@ export default class VermineGroupSheetV2 extends VermineBaseActorSheet {
       addObjective: VermineGroupSheetV2.#onAddObjective,
       createTotemAbility: VermineGroupSheetV2.#onCreateTotemAbility,
       openLearning: VermineGroupSheetV2.#onOpenLearning,
-      openExperiencePhase: VermineGroupSheetV2.#onOpenExperiencePhase
+      openExperiencePhase: VermineGroupSheetV2.#onOpenExperiencePhase,
+      validatePhase: VermineGroupSheetV2.#onValidatePhase
     }
   }
 
@@ -187,4 +188,11 @@ export default class VermineGroupSheetV2 extends VermineBaseActorSheet {
     const dialog = await GroupLearningDialog.create({ actorId: this.document.id })
     if (dialog) dialog.render(true)
   }
+
+  /** Valide la phase d'Expérience courante du Groupe et réinitialise les limites. */
+  static async #onValidatePhase() {
+    const { VermineExperience } = await import("../../system/experience.mjs")
+    await VermineExperience.completePhase(this.document)
+    ui.notifications.info(game.i18n.localize("VERMINE.validate_phase_done"))
+  }
 }
diff --git a/module/system/experience.mjs b/module/system/experience.mjs
index 9c97e09..193d612 100644
--- a/module/system/experience.mjs
+++ b/module/system/experience.mjs
@@ -213,4 +213,26 @@ export class VermineExperience {
     const preferred = actor.system?.skill_categories?.preferred
     return Boolean(category && preferred && category === preferred)
   }
+
+  /**
+   * Valide la phase d'Expérience courante : passe à la phase suivante et
+   * réinitialise toutes les limites d'apprentissage (learned.*), pour un
+   * personnage ou un Groupe.
+   * @param {foundry.abstract.Document} actor personnage ou Groupe
+   * @returns {Promise<void>}
+   */
+  static async completePhase(actor) {
+    const ex = actor.system?.experience
+    if (!ex) return
+    const phase = (ex.phase || 0) + 1
+    const update = { "system.experience.phase": phase }
+    if (ex.learned && typeof ex.learned === "object") {
+      update["system.experience.learned.phase"] = phase
+      for (const key of Object.keys(ex.learned)) {
+        if (key === "phase") continue
+        update[`system.experience.learned.${key}`] = false
+      }
+    }
+    await actor.update(update)
+  }
 }
diff --git a/templates/actor/appv2/character-experience.hbs b/templates/actor/appv2/character-experience.hbs
index baa96d4..56626d5 100644
--- a/templates/actor/appv2/character-experience.hbs
+++ b/templates/actor/appv2/character-experience.hbs
@@ -25,6 +25,9 @@
     <button type="button" data-action="openLearning">
       <i class="fas fa-graduation-cap"></i> {{ localize 'VERMINE.open_learning' }}
     </button>
+    <button type="button" data-action="validatePhase">
+      <i class="fas fa-check"></i> {{ localize 'VERMINE.validate_phase' }}
+    </button>
   </div>
 
   <section class="exp-rewards">
diff --git a/templates/actor/appv2/group-reserve.hbs b/templates/actor/appv2/group-reserve.hbs
index 0dc7645..f98eaa9 100644
--- a/templates/actor/appv2/group-reserve.hbs
+++ b/templates/actor/appv2/group-reserve.hbs
@@ -53,6 +53,7 @@
       <div class="group-experience-actions flexrow flex-group-center">
         <button type="button" data-action="openLearning"><i class="fas fa-graduation-cap"></i> {{ localize 'VERMINE.open_learning' }}</button>
         <button type="button" data-action="openExperiencePhase"><i class="fas fa-star"></i> {{ localize 'VERMINE.experience_phase' }}</button>
+        <button type="button" data-action="validatePhase"><i class="fas fa-check"></i> {{ localize 'VERMINE.validate_phase' }}</button>
       </div>
     </div>