diff --git a/api/pom.xml b/api/pom.xml
index c3adec9..ea56e7f 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -7,11 +7,16 @@
     <version>0.0.1</version>
     <name>api</name>
     <properties>
+        <!-- versions -->
         <ktor_version>1.3.2</ktor_version>
-        <kotlin.code.style>official</kotlin.code.style>
         <kotlin_version>1.3.70</kotlin_version>
         <logback_version>1.2.1</logback_version>
         <junit_version>5.6.2</junit_version>
+        <ktorm_version>2.7.2</ktorm_version>
+        <mariadb_version>2.6.0</mariadb_version>
+        <kodein_version>6.5.4</kodein_version>
+
+        <kotlin.code.style>official</kotlin.code.style>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <kotlin.compiler.incremental>true</kotlin.compiler.incremental>
         <kotlin.compiler.jvmTarget>12</kotlin.compiler.jvmTarget>
@@ -81,7 +86,7 @@
         <dependency>
             <groupId>org.kodein.di</groupId>
             <artifactId>kodein-di-generic-jvm</artifactId>
-            <version>6.5.4</version>
+            <version>${kodein_version}</version>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
@@ -95,6 +100,21 @@
             <version>${junit_version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.mariadb.jdbc</groupId>
+            <artifactId>mariadb-java-client</artifactId>
+            <version>${mariadb_version}</version>
+        </dependency>
+        <dependency>
+            <groupId>me.liuwj.ktorm</groupId>
+            <artifactId>ktorm-core</artifactId>
+            <version>${ktorm_version}</version>
+        </dependency>
+        <dependency>
+            <groupId>me.liuwj.ktorm</groupId>
+            <artifactId>ktorm-support-mysql</artifactId>
+            <version>${ktorm_version}</version>
+        </dependency>
     </dependencies>
     <build>
         <sourceDirectory>${project.basedir}/src</sourceDirectory>