diff --git a/errors.go b/errors.go
index 49d6415..87be655 100644
--- a/errors.go
+++ b/errors.go
@@ -1,9 +1,9 @@
 package netln
 
 import (
-	"github.com/reiver/go-fck"
+	"sourcecode.social/reiver/go-erorr"
 )
 
 const (
-	errRuneError = fck.Error("rune error")
+	errRuneError = erorr.Error("rune error")
 )
diff --git a/go.mod b/go.mod
index 214d6c7..152ee15 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,6 @@ module github.com/reiver/go-netln
 go 1.18
 
 require (
-	github.com/reiver/go-fck v0.0.1 // indirect
 	github.com/reiver/go-utf8 v2.0.1+incompatible // indirect
+	sourcecode.social/reiver/go-erorr v0.0.0-20230922202459-231149d185a1 // indirect
 )
diff --git a/go.sum b/go.sum
index 334ffb4..2013ca3 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,4 @@
-github.com/reiver/go-fck v0.0.1 h1:GhOiIp/4Au3iPUVC1YRfJJS5CdvLDNF9qt/n1lwgWnM=
-github.com/reiver/go-fck v0.0.1/go.mod h1:i77J0nD9GkSF0osPcURZbv9u19F0keF/mrhkgIu9wvM=
 github.com/reiver/go-utf8 v2.0.1+incompatible h1:f1rRbwTIcUaX+1wnLM1+FWelKegAxTURE9MkZCRVOPM=
 github.com/reiver/go-utf8 v2.0.1+incompatible/go.mod h1:tfGntNDUeEZIAsz0mTu0lF7/IlErc+BpQgO6yxYmJig=
+sourcecode.social/reiver/go-erorr v0.0.0-20230922202459-231149d185a1 h1:wpnz4JicQBLWrgGphYBls7DysIFCcnWgDz/vce/sY8E=
+sourcecode.social/reiver/go-erorr v0.0.0-20230922202459-231149d185a1/go.mod h1:NFtd7fzEf0r6A6R7JXYZfayRhPaJy0zt/18VWoLzrxA=