diff --git a/backend/backend/settings.py b/backend/backend/settings.py
index eddbd9e..bc91b49 100644
--- a/backend/backend/settings.py
+++ b/backend/backend/settings.py
@@ -323,6 +323,11 @@
 MESSAGE_ABOUT_US_VALID = (
     f'Длина поля от {MIN_LEN_ABOUT_US} до {MAX_LEN_ABOUT_US} символов'
 )
-MESSAGE_ABOUT_US_REGEX_VALID = """Допускаются цифры, буквы, пробелы и спецсимовлы: %%!#$&*'+/=?^_;():@,.<>`{|}[]~-«»"""
+MESSAGE_ABOUT_US_REGEX_VALID = """Допускаются цифры, буквы, пробелы и спецсимволы: %% №\!#$&*'+/=?^_;():@,.<>`{|}[]~-«»"""
 
 MAX_LEN_PHOTOS = 10
+MIN_LEN_COVER_LETTER = 10
+MAX_LEN_COVER_LETTER = 530
+MESSAGE_COVER_LETTER_VALID = (
+    f'Длина поля от {MIN_LEN_COVER_LETTER} до {MAX_LEN_COVER_LETTER} символов'
+)
diff --git a/backend/projects/migrations/0003_alter_address_address_line_and_more.py b/backend/projects/migrations/0003_alter_address_address_line_and_more.py
new file mode 100644
index 0000000..921e928
--- /dev/null
+++ b/backend/projects/migrations/0003_alter_address_address_line_and_more.py
@@ -0,0 +1,31 @@
+# Generated by Django 4.2.6 on 2023-11-30 23:44
+
+import datetime
+import django.core.validators
+from django.db import migrations, models
+import projects.validators
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('projects', '0002_alter_project_organization_and_more'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='address',
+            name='address_line',
+            field=models.CharField(max_length=100, validators=[projects.validators.validate_address], verbose_name='Адрес в одну строчку'),
+        ),
+        migrations.AlterField(
+            model_name='projectincomes',
+            name='cover_letter',
+            field=models.TextField(blank=True, null=True, validators=[projects.validators.validate_text_cover_letter], verbose_name='Сопроводительное письмо'),
+        ),
+        migrations.AlterField(
+            model_name='volunteer',
+            name='date_of_birth',
+            field=models.DateField(validators=[django.core.validators.MinValueValidator(limit_value=datetime.date(1900, 1, 1)), django.core.validators.MaxValueValidator(limit_value=datetime.date(2023, 11, 30))], verbose_name='Дата рождения'),
+        ),
+    ]
diff --git a/backend/projects/models.py b/backend/projects/models.py
index 3375ac1..8f8ce7e 100644
--- a/backend/projects/models.py
+++ b/backend/projects/models.py
@@ -16,6 +16,7 @@
     validate_ogrn,
     validate_phone_number,
     validate_telegram,
+    validate_text_cover_letter,
     validate_text_field,
     validate_title,
 )
@@ -553,7 +554,7 @@ class ProjectIncomes(models.Model):
         verbose_name='Сопроводительное письмо',
         blank=True,
         null=True,
-        validators=[validate_text_field],
+        validators=[validate_text_cover_letter],
     )
     created_at = models.DateTimeField(
         auto_now_add=True,
diff --git a/backend/projects/validators.py b/backend/projects/validators.py
index e35fbbb..23ddf5a 100644
--- a/backend/projects/validators.py
+++ b/backend/projects/validators.py
@@ -11,7 +11,8 @@
 
 ERROR_MESSAGE_REGEX = 'Недопустимые символы. Разрешены латинские '
 'и кириллические буквы, цифры и спецсимволы.',
-REGEX_PATTERN = r'^[A-Za-zА-Яа-я0-9 !"#$%&\'()*+,\-./:;<=>?@\[\]^_`{|}~]+$'
+# REGEX_PATTERN = r'^[A-Za-zА-Яа-я0-9 !"#$%&\'()*+,\-./:;<=>?@\[\]^_`{|}~]+$'
+REGEX_PATTERN = r'^[A-Za-zА-Яа-я0-9 №«»\\!"#$%&\'()*+,-./:;<=>?@\[\]^_`{|}~]+$'
 
 
 def validate_ogrn(value):
@@ -127,7 +128,8 @@ def validate_name(value):
     """
     MIN_LEN = settings.MIN_LEN_NAME_PROJECT
     MAX_LEN = settings.MAX_LEN_NAME_PROJECT
-    NAME_REGEX = r'^[A-Za-zА-Яа-я0-9 !"#$%&\'()*+,-./:;<=>?@\[\]^_`{|}~]+$'
+    # NAME_REGEX = r'^[A-Za-zА-Яа-я0-9 !"#$%&\'()*+,-./:;<=>?@\[\]^_`{|}~]+$'
+    NAME_REGEX = r'^[A-Za-zА-Яа-я0-9 №«»\\!"#$%&\'()*+,-./:;<=>?@\[\]^_`{|}~]+$'
 
     min_length_validator = MinLengthValidator(
         MIN_LEN,
@@ -207,7 +209,8 @@ def validate_text_field(value):
     Валидирует длину и символы в информации об организации.
     """
     regex_validator = RegexValidator(
-        regex=r"(^[%!#$&*'+/=?^_;():@,.<>`{|}~-«»0-9A-ZА-ЯЁ\s]+)\Z",
+        # regex=r"(^[%!#$&*'+/=?^_;():@,.<>`{|}~-«»0-9A-ZА-ЯЁ\s]+)\Z",
+        regex=r'^[A-Za-zА-Яа-я0-9 №«»\\!"#$%&\'()*+,-./:;<=>?@\[\]^_`{|}~]+$',
         message=settings.MESSAGE_ABOUT_US_REGEX_VALID,
         flags=re.I,
     )
@@ -249,3 +252,27 @@ def validate_address(value):
     min_length_validator(value)
     max_length_validator(value)
     regex_validator(value)
+
+
+def validate_text_cover_letter(value):
+    """
+    Валидирует длину и символы в информации об организации.
+    """
+    regex_validator = RegexValidator(
+        regex=r'^[A-Za-zА-Яа-я0-9 №«»\\!"#$%&\'()*+,-./:;<=>?@\[\]^_`{|}~]+$',
+        # regex=r"(^[%!#$&*'+/=?^_;():@,.<>`{|}~-«»0-9A-ZА-ЯЁ\s]+)\Z",
+        message=settings.MESSAGE_ABOUT_US_REGEX_VALID,
+        flags=re.I,
+    )
+    min_length_validator = MinLengthValidator(
+        settings.MIN_LEN_COVER_LETTER,
+        message=settings.MESSAGE_COVER_LETTER_VALID,
+    )
+    max_length_validator = MaxLengthValidator(
+        settings.MAX_LEN_COVER_LETTER,
+        message=settings.MESSAGE_COVER_LETTER_VALID,
+    )
+
+    min_length_validator(value)
+    max_length_validator(value)
+    regex_validator(value)