diff --git a/data.json b/data.json
index f19f919..218774c 100644
--- a/data.json
+++ b/data.json
@@ -118,6 +118,13 @@
         "upstream": "https://mirrors.kernel.org/",
         "file": "gnu/mirror-updated-timestamp.txt"
     },
+    "Gutenberg": {
+        "out_of_date_since": null,
+        "out_of_date_interval": 172800,
+        "csc": "gutenberg/",
+        "upstream": "https://gutenberg.pglaf.org/",
+        "file": "gutenberg.dcs"
+    },
     "Kernel": {
         "out_of_date_since": null,
         "out_of_date_interval": 86400,