diff --git a/artiq/examples/kc705_nist_clock/device_db.py b/artiq/examples/kc705_nist_clock/device_db.py
index 1930f584b..e95939206 100644
--- a/artiq/examples/kc705_nist_clock/device_db.py
+++ b/artiq/examples/kc705_nist_clock/device_db.py
@@ -1,7 +1,7 @@
 # This is an example device database that needs to be adapted to your setup.
 # The list of devices here is not exhaustive.
 
-core_addr = "192.168.1.50"
+core_addr = "localhost"
 
 device_db = {
     # Core device
diff --git a/flake.lock b/flake.lock
index b99daec18..7b4c21a7b 100644
--- a/flake.lock
+++ b/flake.lock
@@ -45,11 +45,11 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1649725984,
-        "narHash": "sha256-A5n116AtjrWaiWlx0fjGEJ93BaEXkjaSWBntK+TEA14=",
+        "lastModified": 1650278885,
+        "narHash": "sha256-+yRsiO0h9sLvCaAao5Qp0XRrCIbgvGdPpnK4E3Iiu4s=",
         "ref": "master",
-        "rev": "93e9a6a38a179770ce12b38cb8e54347b06cc115",
-        "revCount": 736,
+        "rev": "05be5e93c46a480ecade167171acb42f91f88eb9",
+        "revCount": 753,
         "type": "git",
         "url": "https://git.m-labs.hk/m-labs/nac3.git"
       },
@@ -60,11 +60,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1649619156,
-        "narHash": "sha256-p0q4zpuKMwrzGF+5ZU7Thnpac5TinhDI9jr2mBxhV4w=",
+        "lastModified": 1650244918,
+        "narHash": "sha256-DsS5nxjTpnoUC4pNXJI1rit7TnDTij8vQDa5PtcDCD0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e7d63bd0d50df412f5a1d8acfa3caae75522e347",
+        "rev": "7b38b03d76ab71bdc8dc325e3f6338d984cc35ca",
         "type": "github"
       },
       "original": {