diff --git a/pom.xml b/pom.xml
index 5cbeab4..622e927 100644
--- a/pom.xml
+++ b/pom.xml
@@ -41,10 +41,6 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-validation</artifactId>
-        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-data-jpa</artifactId>
diff --git a/src/main/java/eu/ztsh/wymiana/Main.java b/src/main/java/eu/ztsh/wymiana/Main.java
index dfa8142..c6e067d 100644
--- a/src/main/java/eu/ztsh/wymiana/Main.java
+++ b/src/main/java/eu/ztsh/wymiana/Main.java
@@ -11,7 +11,7 @@ import org.springframework.boot.context.properties.EnableConfigurationProperties
 public class Main {
 
     public static void main(String[] args) {
-        SpringApplication.run(Main.class, args);
+        SpringApplication.run(Main.class);
     }
 
 }
diff --git a/src/main/java/eu/ztsh/wymiana/validation/Adult.java b/src/main/java/eu/ztsh/wymiana/validation/Adult.java
deleted file mode 100644
index affba90..0000000
--- a/src/main/java/eu/ztsh/wymiana/validation/Adult.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package eu.ztsh.wymiana.validation;
-
-import jakarta.validation.Constraint;
-import jakarta.validation.Payload;
-
-import java.lang.annotation.Documented;
-import java.lang.annotation.Retention;
-import java.lang.annotation.Target;
-
-import static java.lang.annotation.ElementType.FIELD;
-import static java.lang.annotation.ElementType.PARAMETER;
-import static java.lang.annotation.RetentionPolicy.RUNTIME;
-
-@Target({ FIELD, PARAMETER })
-@Retention(RUNTIME)
-@Constraint(validatedBy = AdultValidator.class)
-@Documented
-public @interface Adult {
-    String message() default "{jakarta.validation.constraints.Adult.message}";
-
-    Class<?>[] groups() default { };
-
-    Class<? extends Payload>[] payload() default { };
-}
diff --git a/src/main/java/eu/ztsh/wymiana/validation/AdultValidator.java b/src/main/java/eu/ztsh/wymiana/validation/AdultValidator.java
deleted file mode 100644
index 47e2255..0000000
--- a/src/main/java/eu/ztsh/wymiana/validation/AdultValidator.java
+++ /dev/null
@@ -1,42 +0,0 @@
-package eu.ztsh.wymiana.validation;
-
-import jakarta.validation.ConstraintValidator;
-import jakarta.validation.ConstraintValidatorContext;
-
-import java.time.LocalDate;
-import java.time.format.DateTimeFormatter;
-import java.time.format.DateTimeParseException;
-import java.util.Arrays;
-import java.util.Objects;
-import java.util.regex.Pattern;
-import java.util.stream.Collectors;
-
-public class AdultValidator implements ConstraintValidator<Adult, String> {
-
-    private final Pattern pattern = Pattern.compile("\\d{11}");
-    private final DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyyMMdd");
-
-    @Override
-    public boolean isValid(String value, ConstraintValidatorContext context) {
-        if (!pattern.matcher(value).matches()) {
-            return false;
-        }
-        var datePart = Arrays.stream(value.substring(0, 6).split("")).map(Integer::parseInt).toArray(Integer[]::new);
-        final String prefix;
-        if (datePart[2] > 1) {
-            datePart[2] = (datePart[2] - 2);
-            prefix = "20";
-        } else {
-            prefix = "19";
-        }
-        var dateStamp = prefix.concat(Arrays.stream(datePart).map(Objects::toString).collect(Collectors.joining()));
-        try {
-            return LocalDate.parse(dateStamp, dtf)
-                .plusYears(18)
-                .isBefore(LocalDate.now(context.getClockProvider().getClock()));
-        } catch (DateTimeParseException exception) {
-            return false;
-        }
-    }
-
-}
diff --git a/src/main/java/eu/ztsh/wymiana/web/model/UserCreateRequest.java b/src/main/java/eu/ztsh/wymiana/web/model/UserCreateRequest.java
deleted file mode 100644
index 32d884e..0000000
--- a/src/main/java/eu/ztsh/wymiana/web/model/UserCreateRequest.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package eu.ztsh.wymiana.web.model;
-
-import eu.ztsh.wymiana.validation.Adult;
-import jakarta.validation.constraints.Min;
-import jakarta.validation.constraints.NotNull;
-
-public record UserCreateRequest(
-    @NotNull String name,
-    @NotNull String surname,
-    @Adult String pesel,
-    @Min(0) int pln) {
-
-}
diff --git a/src/test/java/eu/ztsh/wymiana/validation/AdultValidatorTest.java b/src/test/java/eu/ztsh/wymiana/validation/AdultValidatorTest.java
deleted file mode 100644
index ca24718..0000000
--- a/src/test/java/eu/ztsh/wymiana/validation/AdultValidatorTest.java
+++ /dev/null
@@ -1,58 +0,0 @@
-package eu.ztsh.wymiana.validation;
-
-import jakarta.validation.ConstraintValidatorContext;
-import org.hibernate.validator.internal.engine.DefaultClockProvider;
-import org.junit.jupiter.api.BeforeAll;
-import org.junit.jupiter.api.DisplayName;
-import org.junit.jupiter.api.Test;
-import org.mockito.Mockito;
-
-import static org.assertj.core.api.Assertions.assertThat;
-
-class AdultValidatorTest {
-
-    private static AdultValidator validator;
-    private static ConstraintValidatorContext validatorContext;
-
-    @BeforeAll
-    static void prepare() {
-        validator = new AdultValidator();
-        validatorContext = Mockito.mock(ConstraintValidatorContext.class);
-        Mockito.when(validatorContext.getClockProvider()).thenReturn(DefaultClockProvider.INSTANCE);
-    }
-
-    @Test
-    @DisplayName("No digits in PESEL")
-    void invalidPatternTest() {
-        assertThat(call("notAPesel")).isFalse();
-    }
-
-    @Test
-    @DisplayName("Not an adult")
-    void notAnAdultTest() {
-        assertThat(call("24242400000")).isFalse();
-    }
-
-    @Test
-    @DisplayName("Adult")
-    void adultTest() {
-        assertThat(call("88010100000")).isTrue();
-    }
-
-    @Test
-    @DisplayName("Elderly person")
-    void seniorTest() {
-        assertThat(call("00010100000")).isTrue();
-    }
-
-    @Test
-    @DisplayName("Invalid date")
-    void notAValidDateTest() {
-        assertThat(call("00919100000")).isFalse();
-    }
-
-    private boolean call(String value) {
-        return validator.isValid(value, validatorContext);
-    }
-
-}