diff --git a/lang/translations/sl.po b/lang/translations/sl.po
new file mode 100644
index 0000000..87fc667
--- /dev/null
+++ b/lang/translations/sl.po
@@ -0,0 +1,21 @@
+# Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.
+#
+#                                     !!! IMPORTANT !!!
+#
+#         Before you edit this file, please keep in mind that contributing to the project
+#                translations is possible ONLY via the Transifex online service.
+#
+#         To submit your translations, visit https://www.transifex.com/ckeditor/ckeditor5.
+#
+#                   To learn more, check out the official contributor's guide:
+#     https://ckeditor.com/docs/ckeditor5/latest/framework/guides/contributing/contributing.html
+#
+msgid ""
+msgstr ""
+"Language-Team: Slovenian (https://www.transifex.com/ckeditor/teams/11143/sl/)\n"
+"Language: sl\n"
+"Plural-Forms: nplurals=4; plural=(n%100==1 ? 0 : n%100==2 ? 1 : n%100==3 || n%100==4 ? 2 : 3);\n"
+
+msgctxt "Toolbar button tooltip for the Block quote feature."
+msgid "Block quote"
+msgstr "Blokiraj citat"
diff --git a/lang/translations/vi.po b/lang/translations/vi.po
new file mode 100644
index 0000000..e624235
--- /dev/null
+++ b/lang/translations/vi.po
@@ -0,0 +1,21 @@
+# Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.
+#
+#                                     !!! IMPORTANT !!!
+#
+#         Before you edit this file, please keep in mind that contributing to the project
+#                translations is possible ONLY via the Transifex online service.
+#
+#         To submit your translations, visit https://www.transifex.com/ckeditor/ckeditor5.
+#
+#                   To learn more, check out the official contributor's guide:
+#     https://ckeditor.com/docs/ckeditor5/latest/framework/guides/contributing/contributing.html
+#
+msgid ""
+msgstr ""
+"Language-Team: Vietnamese (https://www.transifex.com/ckeditor/teams/11143/vi/)\n"
+"Language: vi\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+
+msgctxt "Toolbar button tooltip for the Block quote feature."
+msgid "Block quote"
+msgstr "Trích dẫn"