diff --git a/commons/app/src/main/res/values/strings.xml b/commons/app/src/main/res/values/strings.xml
index f076f3604..8b55dede3 100644
--- a/commons/app/src/main/res/values/strings.xml
+++ b/commons/app/src/main/res/values/strings.xml
@@ -114,6 +114,8 @@
CC BY-SA 3.0 (Poland)
CC BY-SA 3.0 (Romania)
CC BY 3.0
+ CC BY-SA 4.0
+ CC BY 4.0
CC Zero
own-pd
CC BY-SA 2.5