diff --git a/flake.lock b/flake.lock
index debacba..d420e4f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,16 +2,16 @@
   "nodes": {
     "defaultChannel": {
       "locked": {
-        "lastModified": 1695416179,
-        "narHash": "sha256-610o1+pwbSu+QuF3GE0NU5xQdTHM3t9wyYhB9l94Cd8=",
+        "lastModified": 1712608508,
+        "narHash": "sha256-vMZ5603yU0wxgyQeHJryOI+O61yrX2AHwY6LOFyV1gM=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "715d72e967ec1dd5ecc71290ee072bcaf5181ed6",
+        "rev": "4cba8b53da471aea2ab2b0c1f30a81e7c451f4b6",
         "type": "github"
       },
       "original": {
         "id": "nixpkgs",
-        "ref": "nixos-23.05",
+        "ref": "nixos-unstable",
         "type": "indirect"
       }
     },
diff --git a/flake.nix b/flake.nix
index 68b57ce..a119b6c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -6,7 +6,7 @@
     # the nixpkgs version shipped with the nix-portable executable
     # TODO: find out why updating this leads to error when building pkgs.hello:
     # Error: checking whether build environment is sane... ls: cannot access './configure': No such file or directory
-    defaultChannel.url = "nixpkgs/nixos-23.05";
+    defaultChannel.url = "nixpkgs/nixos-unstable";
 
     nix.url = "nix/2.18.0";
   };