diff --git a/config.go b/config.go
index 5b58829..cc6aa11 100644
--- a/config.go
+++ b/config.go
@@ -38,7 +38,7 @@ func WithFilter(f Filter) Option {
 }
 
 // WithAdditionalFieldExtractor takes a function that will be called on every
-// request and the returned fields will be added to a log entry.
+// request and the returned fields will be added to the log entry.
 func WithAdditionalFieldExtractor(extractor AdditionalFieldExtractor) Option {
 	return func(c *config) {
 		c.additionalFieldExtractors = append(c.additionalFieldExtractors, extractor)
diff --git a/logger.go b/logger.go
index 3e81cae..7775229 100644
--- a/logger.go
+++ b/logger.go
@@ -1,6 +1,7 @@
 package chizap
 
 import (
+	"net"
 	"net/http"
 	"time"
 
@@ -10,10 +11,6 @@ import (
 )
 
 // Logger returns a go-chi middleware that logs requests using go.uber.org/zap.
-//
-// Requests with status code >= 500 are logged using logger.Error.
-// Requests with status code >= 400 are logged using logger.Warn.
-// Other requests are logged using logger.Info.
 func Logger(logger *zap.Logger, opts ...Option) func(next http.Handler) http.Handler {
 	cfg := newConfig(opts...)
 	return func(next http.Handler) http.Handler {
@@ -34,11 +31,12 @@ func Logger(logger *zap.Logger, opts ...Option) func(next http.Handler) http.Han
 
 			end := time.Now()
 			statusCode := ww.Status()
+			ip, _, _ := net.SplitHostPort(r.RemoteAddr)
 
 			fields := []zap.Field{
 				zap.Int("statusCode", statusCode),
 				zap.Duration("duration", end.Sub(start)),
-				zap.String("ip", r.RemoteAddr),
+				zap.String("ip", ip),
 				zap.String("method", r.Method),
 				zap.String("query", query),
 				zap.String("path", path),
diff --git a/logger_test.go b/logger_test.go
index c878d9a..807e12d 100644
--- a/logger_test.go
+++ b/logger_test.go
@@ -1,11 +1,11 @@
 package chizap_test
 
 import (
+	"net"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
-	"time"
 
 	"gitea.dwysokinski.me/Kichiyaki/chizap"
 	"github.com/go-chi/chi/v5"
@@ -25,28 +25,24 @@ func TestLogger(t *testing.T) {
 		excluded                 bool
 		expectedLevel            zapcore.Level
 		expectedRoutePattern     string
-		expectedTimeFormat       string
 		expectedAdditionalFields []zap.Field
 	}{
 		{
 			name:                 "/info?test=true",
 			req:                  httptest.NewRequest(http.MethodGet, "/info?test=true", nil),
 			expectedLevel:        zap.InfoLevel,
-			expectedTimeFormat:   time.RFC3339,
 			expectedRoutePattern: "/info",
 		},
 		{
 			name:                 "/warn?test=true",
 			req:                  httptest.NewRequest(http.MethodGet, "/warn?test=true", nil),
 			expectedLevel:        zap.WarnLevel,
-			expectedTimeFormat:   time.RFC3339,
 			expectedRoutePattern: "/warn",
 		},
 		{
 			name:                 "/error?test=true",
 			req:                  httptest.NewRequest(http.MethodGet, "/error?test=true", nil),
 			expectedLevel:        zap.ErrorLevel,
-			expectedTimeFormat:   time.RFC3339,
 			expectedRoutePattern: "/error",
 		},
 		{
@@ -58,7 +54,6 @@ func TestLogger(t *testing.T) {
 			name:                 "/delete/123",
 			req:                  httptest.NewRequest(http.MethodDelete, "/delete/123", nil),
 			expectedLevel:        zap.InfoLevel,
-			expectedTimeFormat:   time.RFC3339,
 			expectedRoutePattern: "/delete/{id}",
 			expectedAdditionalFields: []zap.Field{
 				zap.String("id", "123"),
@@ -89,10 +84,15 @@ func TestLogger(t *testing.T) {
 			assert.Equal(t, tt.req.URL.Path, entry.Message)
 			assert.Equal(t, tt.expectedLevel, entry.Level)
 			require.Len(t, entry.Context, 11+len(tt.expectedAdditionalFields))
+			ip, _, _ := net.SplitHostPort(tt.req.RemoteAddr)
+			assert.Contains(t, entry.Context, zap.String("ip", ip))
 			assert.Contains(t, entry.Context, zap.Int("statusCode", rr.Code))
 			assert.Contains(t, entry.Context, zap.String("method", tt.req.Method))
 			assert.Contains(t, entry.Context, zap.String("path", tt.req.URL.Path))
 			assert.Contains(t, entry.Context, zap.String("query", tt.req.URL.RawQuery))
+			assert.Contains(t, entry.Context, zap.String("proto", tt.req.Proto))
+			assert.Contains(t, entry.Context, zap.String("referer", tt.req.Referer()))
+			assert.Contains(t, entry.Context, zap.String("userAgent", tt.req.UserAgent()))
 			assert.Contains(t, entry.Context, zap.String("routePattern", tt.expectedRoutePattern))
 			for _, f := range tt.expectedAdditionalFields {
 				assert.Contains(t, entry.Context, f)