diff --git a/package.json b/package.json
index b87be8d..ddce8d2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "quirons-broker",
-  "version": "0.0.1-alpha.143",
+  "version": "0.0.1-alpha.144",
   "description": "A small library to expose the broker types",
   "typings": "index.d.ts",
   "types": "index.d.ts",
diff --git a/src/ttalk/schemas/SickNote.ts b/src/ttalk/schemas/SickNote.ts
index eb5413e..574c74a 100644
--- a/src/ttalk/schemas/SickNote.ts
+++ b/src/ttalk/schemas/SickNote.ts
@@ -29,11 +29,11 @@ export const SickNoteInfo = t.intersection([
         /** Nome do Médico */
         doctorName: t.string,
         /** Código do CRM */
-        classEntityRegistrationCode: t.string,
+        classEntityRegistrationCode: t.union([t.string, t.null]),
         /** Estado do CRM */
-        classEntityState: t.string,
+        classEntityState: t.union([t.string, t.null]),
         /** Código CID */
-        internationalDiseaseClassification: t.string,
+        internationalDiseaseClassification: t.union([t.string, t.null]),
         /** Acidente */
         accident: t.string,
         /** Observações */