diff --git a/data.json b/data.json
index ee2feec..2fcd034 100644
--- a/data.json
+++ b/data.json
@@ -41,6 +41,13 @@
         "upstream": "https://download.ceph.com/",
         "file": "timestamp"
     },
+    "Cygwin": {
+        "out_of_date_since": null,
+        "out_of_date_interval": 86400,
+        "csc": "cygwin/",
+        "upstream": "https://cygwin.mirror.globo.tech/",
+        "file": "x86/sha512.sum"
+    },
     "Debian": {
         "out_of_date_since": null,
         "out_of_date_interval": 86400,