diff --git a/persistence/pom.xml b/persistence/pom.xml
index bf6bb73..23a2692 100644
--- a/persistence/pom.xml
+++ b/persistence/pom.xml
@@ -10,7 +10,7 @@
         <version>1.0-SNAPSHOT</version>
     </parent>
 
-    <artifactId>persitence</artifactId>
+    <artifactId>persistence</artifactId>
     <version>1.0-SNAPSHOT</version>
 
     <dependencies>
diff --git a/pom.xml b/pom.xml
index 888381b..a148649 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,24 +13,25 @@
         <module>lang</module>
         <module>persistence</module>
     </modules>
-    
+
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
+        <maven.compiler.source>1.11</maven.compiler.source>
+        <maven.compiler.target>1.11</maven.compiler.target>
+        <slf4j.version>1.7.28</slf4j.version>
     </properties>
 
     <dependencies>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
-            <version>RELEASE</version>
+            <version>${slf4j.version}</version>
         </dependency>
 
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-simple</artifactId>
-            <version>RELEASE</version>
+            <version>${slf4j.version}</version>
         </dependency>
     </dependencies>