diff --git a/src/openapi/contracts/contracts-crud.yaml b/src/openapi/contracts/contracts-crud.yaml
index 1361acf..e89b531 100644
--- a/src/openapi/contracts/contracts-crud.yaml
+++ b/src/openapi/contracts/contracts-crud.yaml
@@ -584,8 +584,50 @@ paths:
           schema:
             type: string
             example: F2024-0030
-          required: true
+          required: false
           description: External reference of the invoice.
+        - in: query
+          name: term
+          schema:
+            type: integer
+            example: 4
+          required: false
+          description: Term of the invoice.
+        - in: query
+          name: createdFrom
+          schema:
+            type: string
+            example: 2024-06-02 15:01:00.000
+          required: false
+          description: Billing date of the invoice (from).
+        - in: query
+          name: createdUntil
+          schema:
+            type: string
+            example: 2024-06-02 15:01:00.000
+          required: false
+          description: Billing date of the invoice (until).
+        - in: query
+          name: updatedFrom
+          schema:
+            type: string
+            example: 2024-06-02 15:01:00.000
+          required: false
+          description: Updated timestamp of the invoice (from).
+        - in: query
+          name: updatedUntil
+          schema:
+            type: string
+            example: 2024-06-02 15:01:00.000
+          required: false
+          description: Updated timestamp of the invoice (until).
+        - in: query
+          name: state
+          schema:
+            type: string
+            example: created
+          required: false
+          description: Invoice state.
       responses:
         "200":
           description: OK