diff --git a/internal/logparser/_golden/genericjson_logrus_01.json b/internal/logparser/_golden/genericjson_logrus_01.json
new file mode 100644
index 00000000..53b22e79
--- /dev/null
+++ b/internal/logparser/_golden/genericjson_logrus_01.json
@@ -0,0 +1,9 @@
+{
+  "severity_number_str": "Info",
+  "severity_number": 9,
+  "severity_text": "info",
+  "body": "A group of walrus emerges from the ocean",
+  "timestamp": "2023-12-04T10:54:23Z",
+  "animal": "walrus",
+  "size": 10
+}
\ No newline at end of file
diff --git a/internal/logparser/_golden/genericjson_slog_01.json b/internal/logparser/_golden/genericjson_slog_01.json
new file mode 100644
index 00000000..2146f097
--- /dev/null
+++ b/internal/logparser/_golden/genericjson_slog_01.json
@@ -0,0 +1,8 @@
+{
+  "severity_number_str": "Info",
+  "severity_number": 9,
+  "severity_text": "INFO",
+  "body": "hello world",
+  "timestamp": "2023-12-04T10:54:23.012381337Z",
+  "answer": 42
+}
\ No newline at end of file
diff --git a/internal/logparser/_golden/genericjson_slog_02.json b/internal/logparser/_golden/genericjson_slog_02.json
new file mode 100644
index 00000000..094d371d
--- /dev/null
+++ b/internal/logparser/_golden/genericjson_slog_02.json
@@ -0,0 +1,6 @@
+{
+  "severity_number_str": "Info",
+  "severity_number": 9,
+  "severity_text": "INFO",
+  "body": "No time"
+}
\ No newline at end of file
diff --git a/internal/logparser/_golden/genericjson_01.json b/internal/logparser/_golden/genericjson_zap_01.json
similarity index 94%
rename from internal/logparser/_golden/genericjson_01.json
rename to internal/logparser/_golden/genericjson_zap_01.json
index f24e2adf..0ee64dde 100644
--- a/internal/logparser/_golden/genericjson_01.json
+++ b/internal/logparser/_golden/genericjson_zap_01.json
@@ -1,5 +1,6 @@
 {
   "severity_number_str": "Info",
+  "severity_number": 9,
   "severity_text": "info",
   "body": "Events",
   "timestamp": "2023-12-04T09:11:59.1613184Z",
diff --git a/internal/logparser/_testdata/genericjson/logrus.jsonl b/internal/logparser/_testdata/genericjson/logrus.jsonl
new file mode 100644
index 00000000..20083a22
--- /dev/null
+++ b/internal/logparser/_testdata/genericjson/logrus.jsonl
@@ -0,0 +1 @@
+{"animal":"walrus","level":"info","msg":"A group of walrus emerges from the ocean","size":10,"time":"2023-12-04T13:54:23+03:00"}
\ No newline at end of file
diff --git a/internal/logparser/_testdata/genericjson/slog.jsonl b/internal/logparser/_testdata/genericjson/slog.jsonl
new file mode 100644
index 00000000..a92b4cec
--- /dev/null
+++ b/internal/logparser/_testdata/genericjson/slog.jsonl
@@ -0,0 +1,2 @@
+{"time":"2023-12-04T13:54:23.012381337+03:00","level":"INFO","msg":"hello world","answer":42}
+{"level":"INFO","msg":"No time"}
\ No newline at end of file
diff --git a/internal/logparser/json.go b/internal/logparser/json.go
index 01fea525..a0a35511 100644
--- a/internal/logparser/json.go
+++ b/internal/logparser/json.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"strings"
 	"time"
+	"unicode"
 
 	"github.com/go-faster/errors"
 	"github.com/go-faster/jx"
@@ -250,7 +251,7 @@ func (GenericJSONParser) Parse(data []byte) (*Line, error) {
 				return nil
 			}
 			line.SeverityText = v
-			line.SeverityNumber = _severityMap[rune(v[0])]
+			line.SeverityNumber = _severityMap[unicode.ToLower(rune(v[0]))]
 		case msgField:
 			if d.Next() != jx.String {
 				return addJSONMapKey(attrs, string(k), d)
diff --git a/internal/logparser/json_test.go b/internal/logparser/json_test.go
index b87f2038..a52d5fb5 100644
--- a/internal/logparser/json_test.go
+++ b/internal/logparser/json_test.go
@@ -6,28 +6,47 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"strings"
 	"testing"
 
+	"github.com/go-faster/jx"
 	"github.com/go-faster/sdk/gold"
 	"github.com/stretchr/testify/require"
 )
 
 func TestGenericJSONParser_Parse(t *testing.T) {
-	data, err := os.ReadFile(filepath.Join("_testdata", "genericjson", "zap.jsonl"))
+	files, err := os.ReadDir(filepath.Join("_testdata", "genericjson"))
 	require.NoError(t, err, "read testdata")
 
-	var parser GenericJSONParser
-	scanner := bufio.NewScanner(bytes.NewReader(data))
+	for _, file := range files {
+		t.Run(file.Name(), func(t *testing.T) {
+			data, err := os.ReadFile(filepath.Join("_testdata", "genericjson", file.Name()))
+			require.NoError(t, err, "read testdata")
 
-	var i int
-	for scanner.Scan() {
-		i++
-		t.Run(fmt.Sprintf("Line%02d", i), func(t *testing.T) {
-			line, err := parser.Parse(scanner.Bytes())
-			require.NoError(t, err, "parse")
+			var parser GenericJSONParser
+
+			scanner := bufio.NewScanner(bytes.NewReader(data))
 
-			name := fmt.Sprintf("genericjson_%02d.json", i)
-			gold.Str(t, line.String(), name)
+			var i int
+			for scanner.Scan() {
+				s := strings.TrimSpace(scanner.Text())
+				if s == "" {
+					continue
+				}
+				i++
+				t.Run(fmt.Sprintf("Line%02d", i), func(t *testing.T) {
+					t.Logf("%s", s)
+					if !jx.Valid(scanner.Bytes()) {
+						t.Fatal("invalid")
+					}
+					line, err := parser.Parse([]byte(s))
+					require.NoError(t, err, "parse")
+					name := fmt.Sprintf("genericjson_%s_%02d.json",
+						strings.TrimSuffix(file.Name(), filepath.Ext(file.Name())), i,
+					)
+					gold.Str(t, line.String(), name)
+				})
+			}
 		})
 	}
 }
diff --git a/internal/logparser/line.go b/internal/logparser/line.go
index 5dc261ed..ba9300b0 100644
--- a/internal/logparser/line.go
+++ b/internal/logparser/line.go
@@ -36,6 +36,9 @@ func (l Line) Encode(e *jx.Encoder) {
 			e.Field("severity_number_str", func(e *jx.Encoder) {
 				e.Str(l.SeverityNumber.String())
 			})
+			e.Field("severity_number", func(e *jx.Encoder) {
+				e.Int64(int64(l.SeverityNumber))
+			})
 		}
 		if l.SeverityText != "" {
 			e.Field("severity_text", func(e *jx.Encoder) {
@@ -47,7 +50,7 @@ func (l Line) Encode(e *jx.Encoder) {
 				e.Str(l.Body)
 			})
 		}
-		if !l.Timestamp.AsTime().IsZero() {
+		if !l.Timestamp.AsTime().IsZero() && l.Timestamp != 0 {
 			e.Field("timestamp", func(e *jx.Encoder) {
 				e.Str(l.Timestamp.AsTime().Format(time.RFC3339Nano))
 			})