diff --git a/urls.json b/urls.json
index aca5e31..fe648d3 100644
--- a/urls.json
+++ b/urls.json
@@ -9,7 +9,7 @@
     ],
     "ignored": false,
     "last_fetch": 1727571498,
-    "last_head": 1727916832,
+    "last_head": 1728003235,
     "mirror": "http://www.cs.virginia.edu/~bjc8c/archive/",
     "size": 271109057
   },
@@ -18,7 +18,7 @@
     "discovered": [],
     "ignored": false,
     "last_fetch": 1727571501,
-    "last_head": 1727916832,
+    "last_head": 1728003235,
     "mirror": "http://www.cs.virginia.edu/~bjc8c/archive/tock/",
     "size": 115305315
   },
@@ -27,7 +27,7 @@
     "discovered": [],
     "ignored": false,
     "last_fetch": 1727571505,
-    "last_head": 1727916832,
+    "last_head": 1728003235,
     "mirror": "http://www.cs.virginia.edu/~bjc8c/archive/tock/",
     "size": 139449871
   },
@@ -36,7 +36,7 @@
     "discovered": [],
     "ignored": false,
     "last_fetch": 1727571509,
-    "last_head": 1727916832,
+    "last_head": 1728003235,
     "mirror": "http://www.cs.virginia.edu/~bjc8c/archive/tock/",
     "size": 151249045
   },
@@ -45,7 +45,7 @@
     "discovered": [],
     "ignored": false,
     "last_fetch": 1727571512,
-    "last_head": 1727916832,
+    "last_head": 1728003236,
     "mirror": "http://www.cs.virginia.edu/~bjc8c/archive/tock/",
     "size": 300158324
   },
@@ -54,7 +54,7 @@
     "discovered": [],
     "ignored": false,
     "last_fetch": 1727744354,
-    "last_head": 1727916832,
+    "last_head": 1728003236,
     "mirror": "http://www.cs.virginia.edu/~bjc8c/archive/tock/",
     "size": 314700571
   },
@@ -68,7 +68,7 @@
     ],
     "ignored": false,
     "last_fetch": 1727744362,
-    "last_head": 1727916833,
+    "last_head": 1728003237,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/",
     "size": 271109057
   },
@@ -85,7 +85,7 @@
     ],
     "ignored": false,
     "last_fetch": 1727916835,
-    "last_head": 1727830442,
+    "last_head": 1728003237,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/tock/",
     "size": 271109057
   },
@@ -98,7 +98,7 @@
     ],
     "ignored": false,
     "last_fetch": 1727916836,
-    "last_head": 1727830442,
+    "last_head": 1728003238,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/tock/",
     "size": 115305315
   },
@@ -111,7 +111,7 @@
     ],
     "ignored": false,
     "last_fetch": 1727916838,
-    "last_head": 1727830442,
+    "last_head": 1728003238,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/tock/",
     "size": 139449871
   },
@@ -124,7 +124,7 @@
     ],
     "ignored": false,
     "last_fetch": 1727916839,
-    "last_head": 1727830443,
+    "last_head": 1728003238,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/tock/",
     "size": 151249045
   },
@@ -137,7 +137,7 @@
     ],
     "ignored": false,
     "last_fetch": 1727916842,
-    "last_head": 1727830443,
+    "last_head": 1728003239,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/tock/",
     "size": 300158324
   },
@@ -150,7 +150,7 @@
     ],
     "ignored": false,
     "last_fetch": 1727916845,
-    "last_head": 1727830444,
+    "last_head": 1728003239,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/tock/",
     "size": 314700571
   }