diff --git a/.drone.env b/.drone.env
index f3c234b251..ccce19b28f 100644
--- a/.drone.env
+++ b/.drone.env
@@ -1,5 +1,5 @@
 # The test runner source for API tests
-CORE_COMMITID=7e0111cd82d8b1515f84d7bc494173620e46d96d
+CORE_COMMITID=0439daa95d1e63c45086ab3fff251f4e9890f8b6
 CORE_BRANCH=master
 
 # The test runner source for UI tests
diff --git a/tests/acceptance/expected-failures-API-on-OCIS-storage.md b/tests/acceptance/expected-failures-API-on-OCIS-storage.md
index 190f7769b9..95b5050283 100644
--- a/tests/acceptance/expected-failures-API-on-OCIS-storage.md
+++ b/tests/acceptance/expected-failures-API-on-OCIS-storage.md
@@ -1487,6 +1487,9 @@ Not everything needs to be implemented for ocis. While the oc10 testsuite covers
 ### [Cannot download preview of shared received file after the shareowner has changed the file content](https://github.com/owncloud/ocis/issues/2538)
 -   [apiWebdavPreviews/previews.feature:196](https://github.com/owncloud/core/blob/master/tests/acceptance/features/apiWebdavPreviews/previews.feature#L196)
 
+### [Preview of text file with UTF content does not render correctly](https://github.com/owncloud/ocis/issues/2570)
+-   [apiWebdavPreviews/previews.feature:208](https://github.com/owncloud/core/blob/master/tests/acceptance/features/apiWebdavPreviews/previews.feature#L208)
+
 ### [Share path in the response is different between share states](https://github.com/owncloud/ocis/issues/2540)
 -   [apiShareManagementToShares/acceptShares.feature:65](https://github.com/owncloud/core/blob/master/tests/acceptance/features/apiShareManagementToShares/acceptShares.feature#L65)
 -   [apiShareManagementToShares/acceptShares.feature:93](https://github.com/owncloud/core/blob/master/tests/acceptance/features/apiShareManagementToShares/acceptShares.feature#L93)