diff --git a/go.mod b/go.mod
index 2424688..0cc36a0 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@ module github.com/rwinkhart/peercred-mini
 
 go 1.24.1
 
-require golang.org/x/sys v0.31.0
+require github.com/rwinkhart/sys v0.0.0-20250404053244-7215932ae926
diff --git a/go.sum b/go.sum
index 8b5c0ea..3e3b994 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,2 @@
-golang.org/x/sys v0.29.1-0.20250107080300-1c14dcadc3ab h1:BMkEEWYOjkvOX7+YKOGbp6jCyQ5pR2j0Ah47p1Vdsx4=
-golang.org/x/sys v0.29.1-0.20250107080300-1c14dcadc3ab/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.31.0 h1:ioabZlmFYtWhL+TRYpcnNlLwhyxaM9kWTDEmfnprqik=
-golang.org/x/sys v0.31.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+github.com/rwinkhart/sys v0.0.0-20250404053244-7215932ae926 h1:MJe9Z46ilI9g7N3/JvQ4pHdXlZvb7InTb3aCoXrSRXM=
+github.com/rwinkhart/sys v0.0.0-20250404053244-7215932ae926/go.mod h1:vs22XiZlTvulYNkiIbKpx01rWq8dXeSF3PML0S2nQd4=
diff --git a/peercred_darwin.go b/peercred_darwin.go
index b9fb9cb..6888977 100644
--- a/peercred_darwin.go
+++ b/peercred_darwin.go
@@ -9,7 +9,7 @@ import (
 	"net"
 	"strconv"
 
-	"golang.org/x/sys/unix"
+	"github.com/rwinkhart/sys/unix"
 )
 
 func getUnix(c *net.UnixConn) (*Creds, error) {
diff --git a/peercred_freebsd.go b/peercred_freebsd.go
index dd41c3b..b604557 100644
--- a/peercred_freebsd.go
+++ b/peercred_freebsd.go
@@ -9,7 +9,7 @@ import (
 	"net"
 	"strconv"
 
-	"golang.org/x/sys/unix"
+	"github.com/rwinkhart/sys/unix"
 )
 
 func getUnix(c *net.UnixConn) (*Creds, error) {
@@ -35,7 +35,7 @@ func getUnix(c *net.UnixConn) (*Creds, error) {
 		return nil, err
 	}
 	return &Creds{
-		pid: 0, // FreeBSD 13 adds a cr_pid field, can be used here.
+		pid: int(cred.Pid),
 		uid: strconv.FormatUint(uint64(cred.Uid), 10),
 	}, nil
 }
diff --git a/peercred_linux.go b/peercred_linux.go
index 617012c..c90a9b9 100644
--- a/peercred_linux.go
+++ b/peercred_linux.go
@@ -9,7 +9,7 @@ import (
 	"net"
 	"strconv"
 
-	"golang.org/x/sys/unix"
+	"github.com/rwinkhart/sys/unix"
 )
 
 func getUnix(c *net.UnixConn) (*Creds, error) {
diff --git a/peercred_solaris.go b/peercred_solaris.go
index 2236970..eecfcaf 100644
--- a/peercred_solaris.go
+++ b/peercred_solaris.go
@@ -9,7 +9,7 @@ import (
 	"net"
 	"strconv"
 
-	"golang.org/x/sys/unix"
+	"github.com/rwinkhart/sys/unix"
 )
 
 func getUnix(c *net.UnixConn) (*Creds, error) {