diff --git a/lib/Controller/ApiController.php b/lib/Controller/ApiController.php
index a3608cdebf..74556ea69d 100644
--- a/lib/Controller/ApiController.php
+++ b/lib/Controller/ApiController.php
@@ -1195,7 +1195,7 @@ public function newSubmission(int $formId, array $answers, string $shareHash = '
 	#[NoAdminRequired()]
 	#[NoCSRFRequired()]
 	#[PublicPage()]
-	#[ApiRoute(verb: 'POST', url: Constants::API_BASE . 'forms/{formId}/submissions/{submissionId}', requirements: Constants::API_V3_REQUIREMENTS)]
+	#[ApiRoute(verb: 'PUT', url: Constants::API_BASE . 'forms/{formId}/submissions/{submissionId}', requirements: Constants::API_V3_REQUIREMENTS)]
 	public function updateSubmission(int $formId, int $submissionId, array $answers, string $shareHash = ''): DataResponse {
 		$this->logger->debug('Updating submission: formId: {formId}, answers: {answers}, shareHash: {shareHash}', [
 			'formId' => $formId,
diff --git a/src/views/Submit.vue b/src/views/Submit.vue
index 715a6f98e1..847a5e53dc 100644
--- a/src/views/Submit.vue
+++ b/src/views/Submit.vue
@@ -666,7 +666,7 @@ export default {
 
 			try {
 				if (this.submissionId) {
-					await axios.post(
+					await axios.put(
 						generateOcsUrl(
 							'apps/forms/api/v3/forms/{id}/submissions/{submissionId}',
 							{