diff --git a/flake.lock b/flake.lock
index e4a5d0be8..bbd4567e3 100644
--- a/flake.lock
+++ b/flake.lock
@@ -49,15 +49,15 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1755972213,
-        "narHash": "sha256-VYK7aDAv8H1enXn1ECRHmGbeY6RqLnNwUJkOwloIsko=",
-        "rev": "73e96df7cff5783f45e21342a75a1540c4eddce4",
+        "lastModified": 1758360447,
+        "narHash": "sha256-XDY3A83bclygHDtesRoaRTafUd80Q30D/Daf9KSG6bs=",
+        "rev": "8eaee110344796db060382e15d3af0a9fc396e0e",
         "type": "tarball",
-        "url": "https://releases.nixos.org/nixos/unstable-small/nixos-25.11pre850642.73e96df7cff5/nixexprs.tar.xz"
+        "url": "https://releases.nixos.org/nixos/unstable/nixos-25.11pre864002.8eaee1103447/nixexprs.tar.xz"
       },
       "original": {
         "type": "tarball",
-        "url": "https://channels.nixos.org/nixos-unstable-small/nixexprs.tar.xz"
+        "url": "https://channels.nixos.org/nixos-unstable/nixexprs.tar.xz"
       }
     },
     "root": {
@@ -115,17 +115,17 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1757167408,
-        "narHash": "sha256-4XyJ6fmKd9wgJ7vHUQuULYy5ps2gUgkkDk/PrJb2OPY=",
+        "lastModified": 1758405547,
+        "narHash": "sha256-WgaDgvIZMPvlZcZrpPMjkaalTBnGF2lTG+62znXctWM=",
         "owner": "jcollie",
         "repo": "zon2nix",
-        "rev": "dc78177e2ad28d5a407c9e783ee781bd559d7dd5",
+        "rev": "bf983aa90ff169372b9fa8c02e57ea75e0b42245",
         "type": "github"
       },
       "original": {
         "owner": "jcollie",
         "repo": "zon2nix",
-        "rev": "dc78177e2ad28d5a407c9e783ee781bd559d7dd5",
+        "rev": "bf983aa90ff169372b9fa8c02e57ea75e0b42245",
         "type": "github"
       }
     }
diff --git a/flake.nix b/flake.nix
index 23b07f734..7d72a9af3 100644
--- a/flake.nix
+++ b/flake.nix
@@ -24,7 +24,7 @@
     };
 
     zon2nix = {
-      url = "github:jcollie/zon2nix?rev=dc78177e2ad28d5a407c9e783ee781bd559d7dd5";
+      url = "github:jcollie/zon2nix?rev=bf983aa90ff169372b9fa8c02e57ea75e0b42245";
       inputs = {
         # Don't override nixpkgs until Zig 0.15 is available in the Nix branch
         # we are using for "normal" builds.
diff --git a/nix/build-support/check-zig-cache.sh b/nix/build-support/check-zig-cache.sh
index d6a9fdc30..e92a27b6f 100755
--- a/nix/build-support/check-zig-cache.sh
+++ b/nix/build-support/check-zig-cache.sh
@@ -79,7 +79,7 @@ elif [ "$1" != "--update" ]; then
   exit 1
 fi
 
-zon2nix "$BUILD_ZIG_ZON" --nix "$WORK_DIR/build.zig.zon.nix" --txt "$WORK_DIR/build.zig.zon.txt" --json "$WORK_DIR/build.zig.zon.json" --flatpak "$WORK_DIR/zig-packages.json"
+zon2nix "$BUILD_ZIG_ZON" --14 --nix "$WORK_DIR/build.zig.zon.nix" --txt "$WORK_DIR/build.zig.zon.txt" --json "$WORK_DIR/build.zig.zon.json" --flatpak "$WORK_DIR/zig-packages.json"
 alejandra --quiet "$WORK_DIR/build.zig.zon.nix"
 prettier --log-level warn --write "$WORK_DIR/build.zig.zon.json"
 prettier --log-level warn --write "$WORK_DIR/zig-packages.json"
@@ -118,4 +118,3 @@ else
   echo -e "OK: flatpak/zig-packages.json updated."
   exit 0
 fi
-