diff --git a/urls.json b/urls.json
index 5ec3d41..47d4713 100644
--- a/urls.json
+++ b/urls.json
@@ -9,7 +9,7 @@
     ],
     "ignored": false,
     "last_fetch": 1706143398,
-    "last_head": 1706229607,
+    "last_head": 1706315975,
     "mirror": "http://www.cs.virginia.edu/~bjc8c/archive/",
     "size": 271109057
   },
@@ -18,7 +18,7 @@
     "discovered": [],
     "ignored": false,
     "last_fetch": 1706143399,
-    "last_head": 1706229607,
+    "last_head": 1706315976,
     "mirror": "http://www.cs.virginia.edu/~bjc8c/archive/tock/",
     "size": 115305315
   },
@@ -27,7 +27,7 @@
     "discovered": [],
     "ignored": false,
     "last_fetch": 1706143401,
-    "last_head": 1706229607,
+    "last_head": 1706315976,
     "mirror": "http://www.cs.virginia.edu/~bjc8c/archive/tock/",
     "size": 139449871
   },
@@ -36,7 +36,7 @@
     "discovered": [],
     "ignored": false,
     "last_fetch": 1706143403,
-    "last_head": 1706229608,
+    "last_head": 1706315976,
     "mirror": "http://www.cs.virginia.edu/~bjc8c/archive/tock/",
     "size": 151249045
   },
@@ -45,7 +45,7 @@
     "discovered": [],
     "ignored": false,
     "last_fetch": 1706143406,
-    "last_head": 1706229608,
+    "last_head": 1706315977,
     "mirror": "http://www.cs.virginia.edu/~bjc8c/archive/tock/",
     "size": 300158324
   },
@@ -54,7 +54,7 @@
     "discovered": [],
     "ignored": false,
     "last_fetch": 1706143411,
-    "last_head": 1706229608,
+    "last_head": 1706315977,
     "mirror": "http://www.cs.virginia.edu/~bjc8c/archive/tock/",
     "size": 314700571
   },
@@ -68,7 +68,7 @@
     ],
     "ignored": false,
     "last_fetch": 1706143421,
-    "last_head": 1706229609,
+    "last_head": 1706315977,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/",
     "size": 271109057
   },
@@ -85,7 +85,7 @@
     ],
     "ignored": false,
     "last_fetch": 1706143424,
-    "last_head": 1706229609,
+    "last_head": 1706315978,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/tock/",
     "size": 271109057
   },
@@ -98,7 +98,7 @@
     ],
     "ignored": false,
     "last_fetch": 1706143425,
-    "last_head": 1706229609,
+    "last_head": 1706315978,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/tock/",
     "size": 115305315
   },
@@ -111,7 +111,7 @@
     ],
     "ignored": false,
     "last_fetch": 1706143427,
-    "last_head": 1706229609,
+    "last_head": 1706315978,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/tock/",
     "size": 139449871
   },
@@ -124,7 +124,7 @@
     ],
     "ignored": false,
     "last_fetch": 1706143428,
-    "last_head": 1706229610,
+    "last_head": 1706315978,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/tock/",
     "size": 151249045
   },
@@ -137,7 +137,7 @@
     ],
     "ignored": false,
     "last_fetch": 1706143432,
-    "last_head": 1706229610,
+    "last_head": 1706315979,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/tock/",
     "size": 300158324
   },
@@ -150,7 +150,7 @@
     ],
     "ignored": false,
     "last_fetch": 1706143435,
-    "last_head": 1706229610,
+    "last_head": 1706315979,
     "mirror": "https://alpha.mirror.svc.schuermann.io/files/tock/",
     "size": 314700571
   }