diff --git a/firestore.rules b/firestore.rules
index 24b3ab06b..4f9097868 100644
--- a/firestore.rules
+++ b/firestore.rules
@@ -69,7 +69,9 @@ service cloud.firestore {
       return userIsTeamMember;
     }
 
-    // Is a member from the parent of the Objective/KeyResult/Period/KPI
+    /**
+     * Return true if the current user is a member of `document.parent`.
+     */
     function isMemberOfParent(document, type) {
       let userRef = /databases/$(database)/documents/users/$(request.auth.token.email);
       let doc = getAfter(/databases/$(database)/documents/$(type)/$(document));
@@ -149,9 +151,6 @@ service cloud.firestore {
 
     match /periods/{document} {
       allow read: if isSignedIn();
-      allow create: if isSuperAdmin() || isMemberOfParent(document, 'periods') || isAdminOfParent(document, 'periods');
-      allow update: if isSuperAdmin() || isMemberOfParent(document, 'periods') || isAdminOfParent(document, 'periods');
-      allow delete: if isSuperAdmin();
     }
 
     match /kpis/{document} {
diff --git a/src/db/Period/Period.js b/src/db/Period/Period.js
deleted file mode 100644
index 2cfd7fa27..000000000
--- a/src/db/Period/Period.js
+++ /dev/null
@@ -1,40 +0,0 @@
-import { db } from '@/config/firebaseConfig';
-import props from './props';
-import {
-  validateCreateProps,
-  validateUpdateProps,
-  createDocument,
-  updateDocument,
-} from '../common';
-import Objective from '../Objective';
-
-const collection = db.collection('periods');
-
-const create = (data) => {
-  if (!validateCreateProps(props, data)) {
-    throw new Error('Invalid data');
-  }
-  data.progression = 0;
-  return createDocument(collection, data);
-};
-
-const update = (id, data) => {
-  validateUpdateProps(props, data);
-  return updateDocument(collection.doc(id), data);
-};
-
-const archive = (id) => {
-  db.collection('objectives')
-    .where('period', '==', collection.doc(id))
-    .get()
-    .then(({ docs }) =>
-      docs.forEach(({ ref }) => {
-        Objective.archive(ref.id);
-      })
-    );
-
-  update(id, { archived: true });
-};
-const restore = (id) => update(id, { archived: false });
-
-export default { create, update, archive, restore };
diff --git a/src/db/Period/index.js b/src/db/Period/index.js
deleted file mode 100644
index 5860d8d17..000000000
--- a/src/db/Period/index.js
+++ /dev/null
@@ -1,3 +0,0 @@
-import Period from './Period';
-
-export default Period;
diff --git a/src/db/Period/props.js b/src/db/Period/props.js
deleted file mode 100644
index 360ee0d11..000000000
--- a/src/db/Period/props.js
+++ /dev/null
@@ -1,18 +0,0 @@
-export default {
-  name: {
-    type: 'string',
-    required: true,
-  },
-  parent: {
-    type: 'reference',
-    required: true,
-  },
-  startDate: {
-    type: 'date',
-    required: true,
-  },
-  endDate: {
-    type: 'date',
-    required: true,
-  },
-};