diff --git a/logger_go1.21.go b/logger_slog.go
similarity index 100%
rename from logger_go1.21.go
rename to logger_slog.go
diff --git a/logger_slog_test.go b/logger_slog_test.go
new file mode 100644
index 00000000..7ec4df35
--- /dev/null
+++ b/logger_slog_test.go
@@ -0,0 +1,27 @@
+//go:build go1.21
+// +build go1.21
+
+package log
+
+import (
+	"log/slog"
+	"testing"
+)
+
+func TestSlog(t *testing.T) {
+	var logger *slog.Logger = (&Logger{
+		Level:      InfoLevel,
+		TimeField:  "date",
+		TimeFormat: "2006-01-02",
+		Caller:     1,
+	}).Slog()
+
+	sublogger := logger.With("logger", "a_test_slog").With("everything", 42)
+	sublogger.Info("hello from sub slog Info")
+	sublogger.Warn("hello from sub slog Warn")
+	sublogger.Error("hello from sub slog Error")
+
+	logger.Info("hello from slog Info")
+	logger.Warn("hello from slog Warn")
+	logger.Error("hello from slog Error")
+}
diff --git a/logger_test.go b/logger_test.go
index 80e50b7e..15eaa059 100644
--- a/logger_test.go
+++ b/logger_test.go
@@ -7,7 +7,6 @@ import (
 	"fmt"
 	"io"
 	stdLog "log"
-	"log/slog"
 	"net"
 	"os"
 	"strings"
@@ -541,24 +540,6 @@ func TestStdLogger(t *testing.T) {
 	stdLog.Printf("hello from stdLog %s", "Printf")
 }
 
-func TestSlog(t *testing.T) {
-	var logger *slog.Logger = (&Logger{
-		Level:      InfoLevel,
-		TimeField:  "date",
-		TimeFormat: "2006-01-02",
-		Caller:     1,
-	}).Slog()
-
-	sublogger := logger.With("logger", "a_test_slog").With("everything", 42)
-	sublogger.Info("hello from sub slog Info")
-	sublogger.Warn("hello from sub slog Warn")
-	sublogger.Error("hello from sub slog Error")
-
-	logger.Info("hello from slog Info")
-	logger.Warn("hello from slog Warn")
-	logger.Error("hello from slog Error")
-}
-
 type errno uint
 
 func (e errno) Error() string {