diff --git a/dialect/append.go b/dialect/append.go
index 01e80745..9fe4c00a 100644
--- a/dialect/append.go
+++ b/dialect/append.go
@@ -4,7 +4,6 @@ import (
 	"encoding/hex"
 	"math"
 	"strconv"
-	"time"
 	"unicode/utf8"
 
 	"github.com/uptrace/bun/internal"
@@ -94,13 +93,6 @@ func AppendBytes(b []byte, bytes []byte) []byte {
 	return b
 }
 
-func AppendTime(b []byte, tm time.Time) []byte {
-	b = append(b, '\'')
-	b = tm.UTC().AppendFormat(b, "2006-01-02 15:04:05.999999-07:00")
-	b = append(b, '\'')
-	return b
-}
-
 func AppendJSON(b, jsonb []byte) []byte {
 	b = append(b, '\'')
 
diff --git a/dialect/mysqldialect/dialect.go b/dialect/mysqldialect/dialect.go
index 46ef5b64..2cc09cfb 100644
--- a/dialect/mysqldialect/dialect.go
+++ b/dialect/mysqldialect/dialect.go
@@ -84,6 +84,13 @@ func (d *Dialect) IdentQuote() byte {
 	return '`'
 }
 
+func (d *Dialect) AppendTime(b []byte, tm time.Time) []byte {
+	b = append(b, '\'')
+	b = tm.AppendFormat(b, "2006-01-02 15:04:05.999999-07:00")
+	b = append(b, '\'')
+	return b
+}
+
 func (d *Dialect) Append(fmter schema.Formatter, b []byte, v interface{}) []byte {
 	switch v := v.(type) {
 	case time.Time:
diff --git a/dialect/pgdialect/append.go b/dialect/pgdialect/append.go
index e8480b6b..430522b0 100644
--- a/dialect/pgdialect/append.go
+++ b/dialect/pgdialect/append.go
@@ -38,6 +38,13 @@ func customAppender(typ reflect.Type) schema.AppenderFunc {
 	return nil
 }
 
+func appendTime(b []byte, tm time.Time) []byte {
+	b = append(b, '\'')
+	b = tm.UTC().AppendFormat(b, "2006-01-02 15:04:05.999999-07:00")
+	b = append(b, '\'')
+	return b
+}
+
 func appendUint32ValueAsInt(fmter schema.Formatter, b []byte, v reflect.Value) []byte {
 	return strconv.AppendInt(b, int64(int32(v.Uint())), 10)
 }
@@ -61,7 +68,7 @@ func arrayAppend(fmter schema.Formatter, b []byte, v interface{}) []byte {
 	case string:
 		return arrayAppendString(b, v)
 	case time.Time:
-		return dialect.AppendTime(b, v)
+		return appendTime(b, v)
 	default:
 		err := fmt.Errorf("pgdialect: can't append %T", v)
 		return dialect.AppendError(b, err)
diff --git a/dialect/pgdialect/dialect.go b/dialect/pgdialect/dialect.go
index 837c2d8a..8e3fbe50 100644
--- a/dialect/pgdialect/dialect.go
+++ b/dialect/pgdialect/dialect.go
@@ -80,6 +80,10 @@ func (d *Dialect) IdentQuote() byte {
 	return '"'
 }
 
+func (d *Dialect) AppendTime(b []byte, tm time.Time) []byte {
+	return appendTime(b, tm)
+}
+
 func (d *Dialect) Append(fmter schema.Formatter, b []byte, v interface{}) []byte {
 	switch v := v.(type) {
 	case nil:
@@ -105,7 +109,7 @@ func (d *Dialect) Append(fmter schema.Formatter, b []byte, v interface{}) []byte
 	case string:
 		return dialect.AppendString(b, v)
 	case time.Time:
-		return dialect.AppendTime(b, v)
+		return appendTime(b, v)
 	case []byte:
 		return dialect.AppendBytes(b, v)
 	case schema.QueryAppender:
diff --git a/dialect/sqlitedialect/dialect.go b/dialect/sqlitedialect/dialect.go
index 32fd8d3f..251ac4a3 100644
--- a/dialect/sqlitedialect/dialect.go
+++ b/dialect/sqlitedialect/dialect.go
@@ -4,6 +4,7 @@ import (
 	"database/sql"
 	"reflect"
 	"sync"
+	"time"
 
 	"github.com/uptrace/bun/dialect"
 	"github.com/uptrace/bun/dialect/feature"
@@ -62,6 +63,13 @@ func (d *Dialect) IdentQuote() byte {
 	return '"'
 }
 
+func (d *Dialect) AppendTime(b []byte, tm time.Time) []byte {
+	b = append(b, '\'')
+	b = tm.UTC().AppendFormat(b, "2006-01-02 15:04:05.999999-07:00")
+	b = append(b, '\'')
+	return b
+}
+
 func (d *Dialect) Append(fmter schema.Formatter, b []byte, v interface{}) []byte {
 	return schema.Append(fmter, b, v, nil)
 }
diff --git a/schema/append.go b/schema/append.go
index 57d292bf..9dfc56c3 100644
--- a/schema/append.go
+++ b/schema/append.go
@@ -36,7 +36,7 @@ func Append(fmter Formatter, b []byte, v interface{}, custom CustomAppender) []b
 	case string:
 		return dialect.AppendString(b, v)
 	case time.Time:
-		return dialect.AppendTime(b, v)
+		return fmter.Dialect().AppendTime(b, v)
 	case []byte:
 		return dialect.AppendBytes(b, v)
 	case QueryAppender:
diff --git a/schema/append_value.go b/schema/append_value.go
index 8fe8a13b..3d0f37f8 100644
--- a/schema/append_value.go
+++ b/schema/append_value.go
@@ -194,7 +194,7 @@ func AppendJSONValue(fmter Formatter, b []byte, v reflect.Value) []byte {
 
 func appendTimeValue(fmter Formatter, b []byte, v reflect.Value) []byte {
 	tm := v.Interface().(time.Time)
-	return dialect.AppendTime(b, tm)
+	return fmter.Dialect().AppendTime(b, tm)
 }
 
 func appendIPValue(fmter Formatter, b []byte, v reflect.Value) []byte {
diff --git a/schema/dialect.go b/schema/dialect.go
index c50de715..3ce530d9 100644
--- a/schema/dialect.go
+++ b/schema/dialect.go
@@ -4,6 +4,7 @@ import (
 	"database/sql"
 	"reflect"
 	"sync"
+	"time"
 
 	"github.com/uptrace/bun/dialect"
 	"github.com/uptrace/bun/dialect/feature"
@@ -19,8 +20,11 @@ type Dialect interface {
 	OnTable(table *Table)
 
 	IdentQuote() byte
+
+	AppendTime(b []byte, tm time.Time) []byte
 	Append(fmter Formatter, b []byte, v interface{}) []byte
 	Appender(typ reflect.Type) AppenderFunc
+
 	FieldAppender(field *Field) AppenderFunc
 	Scanner(typ reflect.Type) ScannerFunc
 }
@@ -64,6 +68,13 @@ func (d *nopDialect) IdentQuote() byte {
 	return '"'
 }
 
+func (d *nopDialect) AppendTime(b []byte, tm time.Time) []byte {
+	b = append(b, '\'')
+	b = tm.UTC().AppendFormat(b, "2006-01-02 15:04:05.999999-07:00")
+	b = append(b, '\'')
+	return b
+}
+
 func (d *nopDialect) Append(fmter Formatter, b []byte, v interface{}) []byte {
 	return Append(fmter, b, v, nil)
 }
diff --git a/schema/sqltype.go b/schema/sqltype.go
index 72609cf7..76259a67 100644
--- a/schema/sqltype.go
+++ b/schema/sqltype.go
@@ -99,7 +99,7 @@ func (tm NullTime) AppendQuery(fmter Formatter, b []byte) ([]byte, error) {
 	if tm.IsZero() {
 		return dialect.AppendNull(b), nil
 	}
-	return dialect.AppendTime(b, tm.Time), nil
+	return fmter.Dialect().AppendTime(b, tm.Time), nil
 }
 
 func (tm *NullTime) Scan(src interface{}) error {