diff --git a/blubb.json b/blubb.json
index 52351018..b781c4b0 100644
--- a/blubb.json
+++ b/blubb.json
@@ -116,6 +116,12 @@
          "imagewidth":800,
          "margin":0,
          "name":"blubb",
+         "properties":[
+                {
+                 "name":"tilesetCopyright",
+                 "type":"string",
+                 "value":"https:\/\/unsplash.com\/license"
+                }],
          "spacing":0,
          "tilecount":300,
          "tileheight":32,
@@ -129,6 +135,12 @@
          "imagewidth":64,
          "margin":0,
          "name":"worldExit",
+         "properties":[
+                {
+                 "name":"tilesetCopyright",
+                 "type":"string",
+                 "value":"CC-BY 4.0 - https:\/\/rc3.world"
+                }],
          "spacing":0,
          "tilecount":4,
          "tileheight":32,
@@ -142,6 +154,12 @@
          "imagewidth":288,
          "margin":0,
          "name":"mapUtilities",
+         "properties":[
+                {
+                 "name":"tilesetCopyright",
+                 "type":"string",
+                 "value":"CC-BY 4.0 - https:\/\/rc3.world"
+                }],
          "spacing":0,
          "tilecount":9,
          "tileheight":32,
@@ -161,4 +179,4 @@
  "type":"map",
  "version":"1.6",
  "width":25
-}
\ No newline at end of file
+}