diff --git a/pom.xml b/pom.xml
index ad6795d..a8c5ab9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -41,7 +41,7 @@
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-engine</artifactId>
-            <version>${junit.version}</version>
+            <version>5.10.2</version>
             <scope>test</scope>
         </dependency>
 
@@ -49,55 +49,55 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-core</artifactId>
-            <version>${jackson.version}</version>
+            <version>2.16.1</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-annotations</artifactId>
-            <version>${jackson.version}</version>
+            <version>2.16.1</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>${jackson.version}</version>
+            <version>2.16.1</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.datatype</groupId>
             <artifactId>jackson-datatype-jsr310</artifactId>
-            <version>${jackson.version}</version>
+            <version>2.16.1</version>
         </dependency>
         <!-- xml -->
         <dependency>
             <groupId>com.fasterxml.jackson.dataformat</groupId>
             <artifactId>jackson-dataformat-xml</artifactId>
-            <version>${jackson.version}</version>
+            <version>2.16.1</version>
         </dependency>
 
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
-            <version>${slf4j-api.version}</version>
+            <version>2.0.3</version>
             <scope>provided</scope>
         </dependency>
 
         <dependency>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-javadoc-plugin</artifactId>
-            <version>${maven-javadoc-plugin.version}</version>
+            <version>3.10.0</version>
             <scope>provided</scope>
         </dependency>
 
         <dependency>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-gpg-plugin</artifactId>
-            <version>${maven-gpg-plugin.version}</version>
+            <version>3.2.3</version>
             <scope>provided</scope>
         </dependency>
 
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
+            <version>1.18.30</version>
             <scope>test</scope>
         </dependency>
 
@@ -105,13 +105,13 @@
         <dependency>
             <groupId>com.squareup.okhttp3</groupId>
             <artifactId>okhttp</artifactId>
-            <version>${okhttp.version}</version>
+            <version>4.12.0</version>
         </dependency>
 
         <dependency>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-source-plugin</artifactId>
-            <version>${maven-source-plugin.version}</version>
+            <version>4.0.0-beta-1</version>
             <scope>provided</scope>
         </dependency>
     </dependencies>