diff --git a/container/syscall.go b/container/syscall.go
index 4af6036..1b85b91 100644
--- a/container/syscall.go
+++ b/container/syscall.go
@@ -64,7 +64,7 @@ const (
 )
 
 var _ encoding.TextMarshaler = _SCHED_LAST
-var _ encoding.TextUnmarshaler = new(SchedPolicy)
+var _ encoding.TextUnmarshaler = new(_SCHED_LAST)
 
 // String returns a unique representation of policy, also used in encoding.
 func (policy SchedPolicy) String() string {
diff --git a/flake.lock b/flake.lock
index bea30d5..ddbe935 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1765384171,
-        "narHash": "sha256-FuFtkJrW1Z7u+3lhzPRau69E0CNjADku1mLQQflUORo=",
+        "lastModified": 1772985280,
+        "narHash": "sha256-FdrNykOoY9VStevU4zjSUdvsL9SzJTcXt4omdEDZDLk=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "44777152652bc9eacf8876976fa72cc77ca8b9d8",
+        "rev": "8f736f007139d7f70752657dff6a401a585d6cbc",
         "type": "github"
       },
       "original": {
@@ -23,11 +23,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1765311797,
-        "narHash": "sha256-mSD5Ob7a+T2RNjvPvOA1dkJHGVrNVl8ZOrAwBjKBDQo=",
+        "lastModified": 1772822230,
+        "narHash": "sha256-yf3iYLGbGVlIthlQIk5/4/EQDZNNEmuqKZkQssMljuw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "09eb77e94fa25202af8f3e81ddc7353d9970ac1b",
+        "rev": "71caefce12ba78d84fe618cf61644dce01cf3a96",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 0d87262..48cf342 100644
--- a/flake.nix
+++ b/flake.nix
@@ -99,7 +99,7 @@
           hakurei = pkgs.pkgsStatic.callPackage ./package.nix {
             inherit (pkgs)
               # passthru.buildInputs
-              go
+              go_1_26
               clang
 
               # nativeBuildInputs
@@ -182,7 +182,7 @@
                         let
                           # this is used for interactive vm testing during development, where tests might be broken
                           package = self.packages.${pkgs.stdenv.hostPlatform.system}.hakurei.override {
-                            buildGoModule = previousArgs: pkgs.pkgsStatic.buildGoModule (previousArgs // { doCheck = false; });
+                            buildGo126Module = previousArgs: pkgs.pkgsStatic.buildGo126Module (previousArgs // { doCheck = false; });
                           };
                         in
                         {
diff --git a/go.mod b/go.mod
index 8dd5674..6457cff 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module hakurei.app
 
-go 1.25
+go 1.26
diff --git a/package.nix b/package.nix
index 099d242..68e3b2c 100644
--- a/package.nix
+++ b/package.nix
@@ -1,7 +1,7 @@
 {
   lib,
   stdenv,
-  buildGoModule,
+  buildGo126Module,
   makeBinaryWrapper,
   xdg-dbus-proxy,
   pkg-config,
@@ -17,7 +17,7 @@
   fuse3,
 
   # for passthru.buildInputs
-  go,
+  go_1_26,
   clang,
 
   # for check
@@ -28,7 +28,7 @@
   withStatic ? stdenv.hostPlatform.isStatic,
 }:
 
-buildGoModule rec {
+buildGo126Module rec {
   pname = "hakurei";
   version = "0.3.6";
 
@@ -51,7 +51,7 @@ buildGoModule rec {
     ];
 
     nativeBuildInputs = [
-      go
+      go_1_26
       pkg-config
       wayland-scanner
     ];
@@ -125,16 +125,20 @@ buildGoModule rec {
         --inherit-argv0 --prefix PATH : ${lib.makeBinPath appPackages}
     '';
 
-  passthru.targetPkgs = [
-    go
-    clang
-    xorg.xorgproto
-    util-linux
+  passthru = {
+    go = go_1_26;
 
-    # for go generate
-    wayland-protocols
-    wayland-scanner
-  ]
-  ++ buildInputs
-  ++ nativeBuildInputs;
+    targetPkgs = [
+      go_1_26
+      clang
+      xorg.xorgproto
+      util-linux
+
+      # for go generate
+      wayland-protocols
+      wayland-scanner
+    ]
+    ++ buildInputs
+    ++ nativeBuildInputs;
+  };
 }
diff --git a/test/default.nix b/test/default.nix
index 15614cc..964e47b 100644
--- a/test/default.nix
+++ b/test/default.nix
@@ -34,7 +34,7 @@ testers.nixosTest {
         (writeShellScriptBin "hakurei-test" ''
           # Assert hst CGO_ENABLED=0: ${
             with pkgs;
-            runCommand "hakurei-hst-cgo" { nativeBuildInputs = [ go ]; } ''
+            runCommand "hakurei-hst-cgo" { nativeBuildInputs = [ self.packages.${system}.hakurei.go ]; } ''
               cp -r ${options.environment.hakurei.package.default.src} "$out"
               chmod -R +w "$out"
               cp ${writeText "hst_cgo_test.go" ''package hakurei_test;import("testing";"hakurei.app/hst");func TestTemplate(t *testing.T){hst.Template()}''} "$out/hst_cgo_test.go"