diff --git a/.github/workflows/run-build.yml b/.github/workflows/run-build.yml
index 3d8a42ac71..28d370fb03 100644
--- a/.github/workflows/run-build.yml
+++ b/.github/workflows/run-build.yml
@@ -11,10 +11,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - name: Set up JDK 17
+    - name: Set up JDK 21
       uses: actions/setup-java@v3
       with:
-        java-version: '17'
-        distribution: 'temurin'
+        java-version: '21'
+        distribution: 'corretto'
     - name: Build with Maven (compile -> test -> package)
       run: mvn -B package --file pom.xml
diff --git a/pom.xml b/pom.xml
index 93823a00c5..27c4980487 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,28 +13,29 @@
     <properties>
         <!-- Project -->
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <java.version>17</java.version>
+        <java.version>21</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <mainClass>net.server.Server</mainClass>
 
         <!-- Maven plugins -->
-        <maven-surefire-plugin.version>3.0.0-M9</maven-surefire-plugin.version> <!-- For running unit tests -->
-        <maven-jar-plugin.version>3.3.0</maven-jar-plugin.version> <!-- Disabled. (for building thin jar) -->
-        <maven-assembly-plugin.version>3.5.0</maven-assembly-plugin.version> <!-- For packaging the executable fat jar -->
+        <maven-surefire-plugin.version>3.2.5</maven-surefire-plugin.version> <!-- For running unit tests -->
+        <maven-jar-plugin.version>3.4.1</maven-jar-plugin.version> <!-- Disabled. (for building thin jar) -->
+        <maven-assembly-plugin.version>3.7.1</maven-assembly-plugin.version> <!-- For packaging the executable fat jar -->
 
         <!-- Dependencies -->
-        <slf4j-api.version>1.7.36</slf4j-api.version> <!-- Logging facade -->
-        <log4j.version>2.20.0</log4j.version> <!-- Slf4j implementation -->
-        <graalvm.version>22.3.1</graalvm.version> <!-- ScriptEngine implementation -->
-        <netty.version>4.1.89.Final</netty.version> <!-- Networking -->
-        <yamlbeans.version>1.15</yamlbeans.version> <!-- Config file -->
+        <slf4j-api.version>2.0.13</slf4j-api.version> <!-- Logging facade -->
+        <log4j.version>2.23.1</log4j.version> <!-- Slf4j implementation -->
+        <graalvm-js.version>23.0.4</graalvm-js.version>
+        <graalvm-js-scriptengine.version>24.0.1</graalvm-js-scriptengine.version> <!-- ScriptEngine implementation -->
+        <netty.version>4.1.109.Final</netty.version> <!-- Networking -->
+        <yamlbeans.version>1.17</yamlbeans.version> <!-- Config file -->
         <jcip-annotations.version>1.0</jcip-annotations.version> <!-- Annotations for concurrency documentation -->
-        <HikariCP.version>5.0.1</HikariCP.version> <!-- Database connection pool -->
-        <mysql-connector-j.version>8.0.32</mysql-connector-j.version> <!-- MySQL JDBC driver -->
-        <jdbi-version>3.37.1</jdbi-version> <!-- Convenience wrapper around JDBC -->
-        <junit.version>5.9.2</junit.version> <!-- Unit test -->
-        <mockito.version>5.1.1</mockito.version> <!-- Unit test -->
+        <HikariCP.version>5.1.0</HikariCP.version> <!-- Database connection pool -->
+        <mysql-connector-j.version>8.4.0</mysql-connector-j.version> <!-- MySQL JDBC driver -->
+        <jdbi-version>3.45.1</jdbi-version> <!-- Convenience wrapper around JDBC -->
+        <junit.version>5.10.2</junit.version> <!-- Unit test -->
+        <mockito.version>5.11.0</mockito.version> <!-- Unit test -->
     </properties>
 
     <dependencies>
@@ -107,7 +108,7 @@
         </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
-            <artifactId>log4j-slf4j-impl</artifactId>
+            <artifactId>log4j-slf4j2-impl</artifactId>
             <version>${log4j.version}</version>
         </dependency>
 
@@ -115,12 +116,12 @@
         <dependency>
             <groupId>org.graalvm.js</groupId>
             <artifactId>js</artifactId>
-            <version>${graalvm.version}</version>
+            <version>${graalvm-js.version}</version>
         </dependency>
         <dependency>
             <groupId>org.graalvm.js</groupId>
             <artifactId>js-scriptengine</artifactId>
-            <version>${graalvm.version}</version>
+            <version>${graalvm-js-scriptengine.version}</version>
         </dependency>
 
         <!-- Testing -->