diff --git a/LICENSE b/LICENSE
index aa39852..2bb060c 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (C) 2022 Marius Schellenberger
+Copyright (C) 2017 Marius Schellenberger
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/go.mod b/go.mod
index c939651..a41c9af 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,3 @@
 module git.giftfish.de/ston1th/godrop/v2
 
-go 1.19
-
-require golang.org/x/sys v0.24.0
+require golang.org/x/sys v0.0.0-20181026144532-2772b66316d2 // indirect
diff --git a/go.sum b/go.sum
index d88e7bd..36d0abd 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,2 @@
-golang.org/x/sys v0.24.0 h1:Twjiwq9dn6R1fQcyiK+wQyHWfaz/BJB+YIpzU/Cv3Xg=
-golang.org/x/sys v0.24.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.0.0-20181026144532-2772b66316d2 h1:W7CqTdBJ1CmxLKe7LptKDnBYV6PHrVLiGnoyBjaG/JQ=
+golang.org/x/sys v0.0.0-20181026144532-2772b66316d2/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
diff --git a/godrop.go b/godrop.go
index 37c7e75..55f39ec 100644
--- a/godrop.go
+++ b/godrop.go
@@ -1,6 +1,5 @@
-// Copyright (C) 2022 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
-//go:build go1.11
 // +build go1.11
 
 // Package godrop provides a simple library to drop privileges on Linux and OpenBSD.
diff --git a/lookup.go b/lookup.go
index 725dc82..2d0e1a9 100644
--- a/lookup.go
+++ b/lookup.go
@@ -1,6 +1,5 @@
-// Copyright (C) 2022 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
-//go:build go1.11
 // +build go1.11
 
 package godrop
diff --git a/lookup_test.go b/lookup_test.go
index 49d2a78..bdcf7bd 100644
--- a/lookup_test.go
+++ b/lookup_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2022 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
 package godrop
 
diff --git a/pledge.go b/pledge.go
index 8c97aba..d0e361e 100644
--- a/pledge.go
+++ b/pledge.go
@@ -1,6 +1,5 @@
-// Copyright (C) 2022 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
-//go:build !openbsd
 // +build !openbsd
 
 package godrop
diff --git a/pledge_openbsd.go b/pledge_openbsd.go
index 0af656a..7369b03 100644
--- a/pledge_openbsd.go
+++ b/pledge_openbsd.go
@@ -1,6 +1,5 @@
-// Copyright (C) 2022 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
-//go:build openbsd
 // +build openbsd
 
 package godrop
diff --git a/unveil.go b/unveil.go
index 412851b..06c8c90 100644
--- a/unveil.go
+++ b/unveil.go
@@ -1,6 +1,5 @@
-// Copyright (C) 2022 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
-//go:build !openbsd
 // +build !openbsd
 
 package godrop
diff --git a/unveil_openbsd.go b/unveil_openbsd.go
index f1e4bbc..f32d630 100644
--- a/unveil_openbsd.go
+++ b/unveil_openbsd.go
@@ -1,6 +1,5 @@
-// Copyright (C) 2022 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
-//go:build openbsd
 // +build openbsd
 
 package godrop