diff --git a/BE/src/main/java/com/codesquad/issuetracker/ragdoll/dao/MilestoneDao_Ragdoll.java b/BE/src/main/java/com/codesquad/issuetracker/ragdoll/dao/MilestoneDao_Ragdoll.java
index db191a2..c826f44 100644
--- a/BE/src/main/java/com/codesquad/issuetracker/ragdoll/dao/MilestoneDao_Ragdoll.java
+++ b/BE/src/main/java/com/codesquad/issuetracker/ragdoll/dao/MilestoneDao_Ragdoll.java
@@ -3,6 +3,9 @@
 import com.codesquad.issuetracker.ragdoll.domain.Milestone;
 import org.springframework.dao.support.DataAccessUtils;
 import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.namedparam.MapSqlParameterSource;
+import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
+import org.springframework.jdbc.core.namedparam.SqlParameterSource;
 import org.springframework.stereotype.Repository;
 
 import javax.sql.DataSource;
@@ -15,8 +18,11 @@ public class MilestoneDao_Ragdoll {
 
     private final JdbcTemplate jdbcTemplate;
 
+    private final NamedParameterJdbcTemplate namedParameterJdbcTemplate;
+
     public MilestoneDao_Ragdoll(DataSource dataSource) {
         this.jdbcTemplate = new JdbcTemplate(dataSource);
+        this.namedParameterJdbcTemplate = new NamedParameterJdbcTemplate(dataSource);
     }
 
     public Milestone findMilestoneById(Integer milestoneId) {
@@ -57,4 +63,16 @@ public void createNewMilestone(String title, LocalDate dueDate, String descripti
                      "VALUES (?, ?, ?, ?, ?)";
         jdbcTemplate.update(sql, new Object[]{title, description, dueDate, LocalDateTime.now(), LocalDateTime.now()});
     }
+
+    public void updateMilestone(Integer milestoneId, String title, LocalDate dueDate, String description) {
+        SqlParameterSource namedParameters = new MapSqlParameterSource()
+                                                .addValue("milestoneId", milestoneId)
+                                                .addValue("title", title)
+                                                .addValue("dueDate", dueDate)
+                                                .addValue("description", description)
+                                                .addValue("updatedDateTime", LocalDateTime.now());
+        String sql = "UPDATE milestone SET title = :title, due_date = :dueDate, description = :description, updated_date_time = :updatedDateTime " +
+                     "WHERE id = :milestoneId";
+        namedParameterJdbcTemplate.update(sql, namedParameters);
+    }
 }