diff --git a/API/openapi.yaml b/API/openapi.yaml
index 4d6b7de6da0f2bef14d1e65c0d7f2fc50688e320..5bbc3faa0b176a568e85c29571f44726c42823f5 100644
--- a/API/openapi.yaml
+++ b/API/openapi.yaml
@@ -16,7 +16,7 @@
 openapi: "3.0.0"
 
 info: 
-  version: 0.0.6
+  version: 1.0.0
   title: World Storage API
   description: API ensuring interoperability between an authoring tool and a World Storage service
   license:
@@ -77,11 +77,7 @@ paths:
                 $ref: '#/components/schemas/Trackable'
       responses:
         '200':
-          description: OK, return the UUID of the Trackable defined by the world storage.
-          content:
-            text/plain:
-              schema: 
-                type: string            
+          description: OK, return the UUID of the Trackable defined by the world storage.   
         '201':
           description: Null response.
         '400':
@@ -90,6 +86,28 @@ paths:
           $ref: '#/components/responses/409_NotEmptyUUID'
         'default':
           $ref: '#/components/responses/4xx_UnexpectedError'
+    put:
+      summary: Modify a Trackable.
+      operationId: modifyTrackable
+      description: Modify an existing Trackable given a json object containing all the required informations. <br> **Please note that ID of the object is required in the JSON**
+      tags:
+        - Trackables
+      requestBody:
+          description: The Trackable to be modified in the world storage.
+          required: true
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Trackable'
+      responses:
+        '200':
+          description: OK, return the UUID of the modified Trackable.
+        '400':
+          $ref: '#/components/responses/400_BadRequest'
+        '404': 
+          $ref: '#/components/responses/404_NotFoundUUID'
+        'default':
+          $ref: '#/components/responses/4xx_UnexpectedError'
     get:
       summary: Return all the Trackables.
       operationId: getTrackables
@@ -112,7 +130,7 @@ paths:
 
   /trackables/{trackableUUID}:
     get:
-      summary: Find a trackable by its UUID.
+      summary: Find a Trackable by its UUID.
       operationId: getTrackableById
       description: Get a single Trackable stored in the world storage from its ID.
       tags:
@@ -177,11 +195,7 @@ paths:
                 $ref: '#/components/schemas/WorldAnchor'
       responses:
         '200':
-          description: OK, return the UUID of the World Anchor defined by the world storage.
-          content:
-            text/plain:
-              schema: 
-                type: string            
+          description: OK, return the UUID of the World Anchor defined by the world storage.    
         '201':
           description: Null response.
         '400':
@@ -190,6 +204,28 @@ paths:
           $ref: '#/components/responses/409_NotEmptyUUID'
         'default':
           $ref: '#/components/responses/4xx_UnexpectedError'
+    put:
+      summary: Modify a World Anchor.
+      operationId: modifyWorldAnchor
+      description: Modify an existing World Anchor given a json object containing all the required informations. <br> **Please note that ID of the object is required in the JSON**
+      tags:
+        - World Anchors
+      requestBody:
+          description: The World Anchor to be modified in the world storage.
+          required: true
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/WorldAnchor'
+      responses:
+        '200':
+          description: OK, return the UUID of the modified World Anchor.
+        '400':
+          $ref: '#/components/responses/400_BadRequest'
+        '404': 
+          $ref: '#/components/responses/404_NotFoundUUID'
+        'default':
+          $ref: '#/components/responses/4xx_UnexpectedError'
     get:
       summary: Return all the World Anchors.
       operationId: getWorldAnchors
@@ -290,6 +326,28 @@ paths:
           $ref: '#/components/responses/409_NotEmptyUUID'
         'default':
           $ref: '#/components/responses/4xx_UnexpectedError'
+    put:
+      summary: Modify a World Link.
+      operationId: modifyWorldLink
+      description: Modify an existing World Link given a json object containing all the required informations. <br> **Please note that ID of the object is required in the JSON**
+      tags:
+        - World Links
+      requestBody:
+          description: The World Link to be modified in the world storage.
+          required: true
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/WorldLink'
+      responses:
+        '200':
+          description: OK, return the UUID of the modified World Link.
+        '400':
+          $ref: '#/components/responses/400_BadRequest'
+        '404': 
+          $ref: '#/components/responses/404_NotFoundUUID'
+        'default':
+          $ref: '#/components/responses/4xx_UnexpectedError'
     get:
       summary: Return all World Links.
       description: Get all the World Links currently being stored in the world storage.