diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f58495f..4287a00 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: 'zulu'
-          java-version: 17
+          java-version: 21
       - name: Maven Install
         run: mvn install -B -V -DskipTests -Dair.check.skip-all
       - name: Maven Tests
diff --git a/discovery-server/pom.xml b/discovery-server/pom.xml
index ef8fe99..52e8b90 100644
--- a/discovery-server/pom.xml
+++ b/discovery-server/pom.xml
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="ISO-8859-1"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
@@ -18,10 +18,6 @@
     </properties>
 
     <dependencies>
-        <dependency>
-            <groupId>io.airlift</groupId>
-            <artifactId>jmx-http-rpc</artifactId>
-        </dependency>
 
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
@@ -44,8 +40,9 @@
         </dependency>
 
         <dependency>
-            <groupId>com.google.inject</groupId>
-            <artifactId>guice</artifactId>
+            <groupId>com.google.errorprone</groupId>
+            <artifactId>error_prone_annotations</artifactId>
+            <optional>true</optional>
         </dependency>
 
         <dependency>
@@ -54,43 +51,38 @@
         </dependency>
 
         <dependency>
-            <groupId>joda-time</groupId>
-            <artifactId>joda-time</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.weakref</groupId>
-            <artifactId>jmxutils</artifactId>
+            <groupId>com.google.inject</groupId>
+            <artifactId>guice</artifactId>
         </dependency>
 
         <dependency>
-            <groupId>org.iq80.leveldb</groupId>
-            <artifactId>leveldb-api</artifactId>
+            <groupId>io.airlift</groupId>
+            <artifactId>bootstrap</artifactId>
         </dependency>
 
         <dependency>
-            <groupId>org.iq80.leveldb</groupId>
-            <artifactId>leveldb</artifactId>
+            <groupId>io.airlift</groupId>
+            <artifactId>concurrent</artifactId>
         </dependency>
 
         <dependency>
             <groupId>io.airlift</groupId>
-            <artifactId>bootstrap</artifactId>
+            <artifactId>configuration</artifactId>
         </dependency>
 
         <dependency>
             <groupId>io.airlift</groupId>
-            <artifactId>concurrent</artifactId>
+            <artifactId>discovery</artifactId>
         </dependency>
 
         <dependency>
             <groupId>io.airlift</groupId>
-            <artifactId>discovery</artifactId>
+            <artifactId>event-http</artifactId>
         </dependency>
 
         <dependency>
             <groupId>io.airlift</groupId>
-            <artifactId>log</artifactId>
+            <artifactId>http-client</artifactId>
         </dependency>
 
         <dependency>
@@ -105,53 +97,51 @@
 
         <dependency>
             <groupId>io.airlift</groupId>
-            <artifactId>node</artifactId>
+            <artifactId>jmx</artifactId>
         </dependency>
-
         <dependency>
             <groupId>io.airlift</groupId>
-            <artifactId>json</artifactId>
+            <artifactId>jmx-http-rpc</artifactId>
         </dependency>
 
         <dependency>
             <groupId>io.airlift</groupId>
-            <artifactId>trace-token</artifactId>
+            <artifactId>json</artifactId>
         </dependency>
 
         <dependency>
             <groupId>io.airlift</groupId>
-            <artifactId>units</artifactId>
+            <artifactId>log</artifactId>
         </dependency>
 
         <dependency>
             <groupId>io.airlift</groupId>
-            <artifactId>http-client</artifactId>
+            <artifactId>node</artifactId>
         </dependency>
 
         <dependency>
             <groupId>io.airlift</groupId>
-            <artifactId>configuration</artifactId>
+            <artifactId>trace-token</artifactId>
         </dependency>
 
         <dependency>
             <groupId>io.airlift</groupId>
-            <artifactId>event-http</artifactId>
+            <artifactId>tracing</artifactId>
         </dependency>
 
         <dependency>
             <groupId>io.airlift</groupId>
-            <artifactId>jmx</artifactId>
+            <artifactId>units</artifactId>
         </dependency>
 
         <dependency>
-            <groupId>io.airlift</groupId>
-            <artifactId>tracing</artifactId>
+            <groupId>jakarta.annotation</groupId>
+            <artifactId>jakarta.annotation-api</artifactId>
         </dependency>
 
         <dependency>
-            <groupId>com.google.errorprone</groupId>
-            <artifactId>error_prone_annotations</artifactId>
-            <optional>true</optional>
+            <groupId>jakarta.validation</groupId>
+            <artifactId>jakarta.validation-api</artifactId>
         </dependency>
 
         <dependency>
@@ -160,20 +150,23 @@
         </dependency>
 
         <dependency>
-            <groupId>jakarta.annotation</groupId>
-            <artifactId>jakarta.annotation-api</artifactId>
+            <groupId>joda-time</groupId>
+            <artifactId>joda-time</artifactId>
         </dependency>
 
         <dependency>
-            <groupId>jakarta.validation</groupId>
-            <artifactId>jakarta.validation-api</artifactId>
+            <groupId>org.iq80.leveldb</groupId>
+            <artifactId>leveldb</artifactId>
         </dependency>
 
-        <!-- for testing -->
         <dependency>
-            <groupId>org.testng</groupId>
-            <artifactId>testng</artifactId>
-            <scope>test</scope>
+            <groupId>org.iq80.leveldb</groupId>
+            <artifactId>leveldb-api</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.weakref</groupId>
+            <artifactId>jmxutils</artifactId>
         </dependency>
 
         <dependency>
@@ -181,5 +174,12 @@
             <artifactId>testing</artifactId>
             <scope>test</scope>
         </dependency>
+
+        <!-- for testing -->
+        <dependency>
+            <groupId>org.testng</groupId>
+            <artifactId>testng</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 </project>
diff --git a/pom.xml b/pom.xml
index a59b840..24bcaba 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.airlift</groupId>
         <artifactId>airbase</artifactId>
-        <version>143</version>
+        <version>156</version>
     </parent>
 
     <groupId>io.airlift.discovery</groupId>
@@ -31,13 +31,6 @@
         </license>
     </licenses>
 
-    <scm>
-        <connection>scm:git:git://github.com/airlift/discovery.git</connection>
-        <developerConnection>scm:git:git@github.com:airlift/discovery.git</developerConnection>
-        <url>https://github.com/airlift/discovery</url>
-        <tag>HEAD</tag>
-    </scm>
-
     <developers>
         <developer>
             <id>dain</id>
@@ -51,34 +44,30 @@
         </developer>
     </developers>
 
+    <modules>
+        <module>discovery-server</module>
+    </modules>
+
+    <scm>
+        <connection>scm:git:git://github.com/airlift/discovery.git</connection>
+        <developerConnection>scm:git:git@github.com:airlift/discovery.git</developerConnection>
+        <tag>HEAD</tag>
+        <url>https://github.com/airlift/discovery</url>
+    </scm>
+
     <properties>
         <air.check.skip-extended>true</air.check.skip-extended>
         <air.javadoc.lint>all,-missing</air.javadoc.lint>
 
-        <project.build.targetJdk>17</project.build.targetJdk>
+        <project.build.targetJdk>21</project.build.targetJdk>
 
-        <dep.airlift.version>234</dep.airlift.version>
+        <dep.airlift.version>247</dep.airlift.version>
         <dep.packaging.version>${dep.airlift.version}</dep.packaging.version>
         <dep.leveldb.version>0.12</dep.leveldb.version>
     </properties>
 
-    <modules>
-        <module>discovery-server</module>
-    </modules>
-
     <dependencyManagement>
         <dependencies>
-            <dependency>
-                <groupId>org.iq80.leveldb</groupId>
-                <artifactId>leveldb-api</artifactId>
-                <version>${dep.leveldb.version}</version>
-            </dependency>
-
-            <dependency>
-                <groupId>org.iq80.leveldb</groupId>
-                <artifactId>leveldb</artifactId>
-                <version>${dep.leveldb.version}</version>
-            </dependency>
 
             <dependency>
                 <groupId>io.airlift</groupId>
@@ -91,7 +80,18 @@
             <dependency>
                 <groupId>io.airlift</groupId>
                 <artifactId>units</artifactId>
-                <version>1.6</version>
+                <version>1.10</version>
+            </dependency>
+
+            <dependency>
+                <groupId>org.iq80.leveldb</groupId>
+                <artifactId>leveldb</artifactId>
+                <version>${dep.leveldb.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.iq80.leveldb</groupId>
+                <artifactId>leveldb-api</artifactId>
+                <version>${dep.leveldb.version}</version>
             </dependency>
         </dependencies>
     </dependencyManagement>