diff --git a/pom.xml b/pom.xml
index f2c9d10..3a9c4d7 100755
--- a/pom.xml
+++ b/pom.xml
@@ -44,11 +44,12 @@
   </scm>
 
     <properties>
-        <oxygen.sdk.version>20.1.0.2</oxygen.sdk.version>
-        <jersey.version>2.27</jersey.version>
-        <slf4j.version>1.7.25</slf4j.version>
-        <jaxb2-basics.version>0.12.0</jaxb2-basics.version>
-        <eclipse.persistence.version>2.7.3</eclipse.persistence.version>
+        <oxygen.sdk.version>25.1.0.2</oxygen.sdk.version>
+        <jersey.version>2.40</jersey.version>
+        <slf4j.version>2.0.7</slf4j.version>
+        <jaxb2-basics.version>0.13.1</jaxb2-basics.version>
+        <eclipse.persistence.version>2.7.10</eclipse.persistence.version>
+        <junit.jupiter.version>5.9.3</junit.jupiter.version>
         <project.build.source>1.8</project.build.source>
         <project.build.target>1.8</project.build.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -70,14 +71,13 @@
         <dependency>
             <groupId>org.mozilla</groupId>
             <artifactId>rhino</artifactId>
-            <version>1.7.7.1</version>
-            <scope>provided</scope> <!-- provided by Oxygen -->
+            <version>1.7.14</version>
+            <scope>provided</scope>  <!-- provided by Oxygen -->
         </dependency>
         <dependency>
             <groupId>net.sf.saxon</groupId>
             <artifactId>Saxon-HE</artifactId>
-            <version>9.8.0-12</version>
-            <scope>provided</scope> <!-- provided by Oxygen -->
+            <version>11.4</version>  <!-- provided by Oxygen -->
         </dependency>
         <dependency>
             <groupId>com.evolvedbinary.xpath</groupId>
@@ -85,21 +85,16 @@
             <version>1.0</version>
         </dependency>
         <dependency>
-            <groupId>javax.xml.bind</groupId>
-            <artifactId>jaxb-api</artifactId>
-            <version>2.3.1</version>
-        </dependency>
-        <dependency>
-            <groupId>com.sun.xml.bind</groupId>
-            <artifactId>jaxb-core</artifactId>
-            <version>2.3.0.1</version>
-            <scope>runtime</scope>
+            <groupId>jakarta.xml.bind</groupId>
+            <artifactId>jakarta.xml.bind-api</artifactId>
+            <version>2.3.3</version>
+            <scope>provided</scope> <!-- provided by Oxygen -->
         </dependency>
         <dependency>
             <groupId>com.sun.xml.bind</groupId>
             <artifactId>jaxb-impl</artifactId>
-            <version>2.3.1</version>
-            <scope>runtime</scope>
+            <version>2.3.3</version>
+            <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>org.eclipse.persistence</groupId>
@@ -125,9 +120,9 @@
             <!-- needed for both `runtime` scope for `jersey-common` and
             `test` scope for our code. If we don't have this the `test` scope alone
             causes it to be excluded from the shaded Jar -->
-            <groupId>javax.annotation</groupId>
-            <artifactId>javax.annotation-api</artifactId>
-            <version>1.3.2</version>
+            <groupId>jakarta.annotation</groupId>
+            <artifactId>jakarta.annotation-api</artifactId>
+            <version>1.3.5</version>
             <scope>compile</scope>
         </dependency>
         <dependency>
@@ -154,9 +149,9 @@
             <scope>runtime</scope>
         </dependency>
         <dependency>
-            <groupId>javax.ws.rs</groupId>
-            <artifactId>javax.ws.rs-api</artifactId>
-            <version>2.1.1</version>
+            <groupId>jakarta.ws.rs</groupId>
+            <artifactId>jakarta.ws.rs-api</artifactId>
+            <version>2.1.6</version>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
@@ -170,6 +165,13 @@
             <version>${jaxb2-basics.version}</version>
         </dependency>
 
+        <dependency>
+            <groupId>xml-apis</groupId>
+            <artifactId>xml-apis</artifactId>
+            <version>1.4.01</version>  <!-- provided by Oxygen -->
+            <scope>provided</scope>
+        </dependency>
+
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-log4j12</artifactId>
@@ -178,9 +180,15 @@
         </dependency> <!-- log4j is provided by Oxygen -->
 
         <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>${junit.jupiter.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>${junit.jupiter.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -195,31 +203,18 @@
             <version>${jersey.version}</version>
             <scope>test</scope>
         </dependency>
-        <!-- useful for replacing the in-memory provider if you want to trace the network traffic -->
-        <!-- dependency>
-            <groupId>org.glassfish.jersey.test-framework.providers</groupId>
-            <artifactId>jersey-test-framework-provider-grizzly2</artifactId>
-            <version>${jersey.version}</version>
-            <scope>test</scope>
-        </dependency -->
+
         <dependency>
             <groupId>org.glassfish.jersey.core</groupId>
             <artifactId>jersey-server</artifactId>
             <version>${jersey.version}</version>
             <scope>test</scope>
         </dependency>
-        <!-- see `compile` scoped `javax.annotation-api` dependency
-        above for explanation -->
-        <!-- dependency>
-            <groupId>javax.annotation</groupId>
-            <artifactId>javax.annotation-api</artifactId>
-            <version>1.2</version>
-            <scope>test</scope>
-        </dependency -->
+
         <dependency>
             <groupId>commons-codec</groupId>
             <artifactId>commons-codec</artifactId>
-            <version>1.11</version>
+            <version>1.14</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
@@ -258,9 +253,9 @@
                 </executions>
             </plugin>
             <plugin>
-                <groupId>org.jvnet.jaxb2.maven2</groupId>
-                <artifactId>maven-jaxb22-plugin</artifactId>
-                <version>0.14.0</version>
+                <groupId>com.evolvedbinary.maven.jvnet</groupId>
+                <artifactId>jaxb23-maven-plugin</artifactId>
+                <version>0.15.0</version>
                 <configuration>
                     <extension>true</extension>
                     <args>
@@ -285,7 +280,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-dependency-plugin</artifactId>
-                <version>3.1.1</version>
+                <version>3.6.0</version>
                 <executions>
                     <execution>
                         <id>analyze</id>
@@ -302,9 +297,12 @@
                                 <ignoredUnusedDeclaredDependency>org.glassfish.jersey.media:jersey-media-jaxb</ignoredUnusedDeclaredDependency>
                                 <ignoredUnusedDeclaredDependency>org.glassfish.jersey.inject:jersey-hk2</ignoredUnusedDeclaredDependency>
                                 <ignoredUnusedDeclaredDependency>org.glassfish:javax.json</ignoredUnusedDeclaredDependency>
-                                <ignoredUnusedDeclaredDependency>com.sun.xml.bind:jaxb-core</ignoredUnusedDeclaredDependency>
                                 <ignoredUnusedDeclaredDependency>com.sun.xml.bind:jaxb-impl</ignoredUnusedDeclaredDependency>
+                                <ignoredUnusedDeclaredDependency>org.junit.jupiter:junit-jupiter-engine</ignoredUnusedDeclaredDependency>
                             </ignoredUnusedDeclaredDependencies>
+                            <ignoredNonTestScopedDependencies>
+                                <ignoredNonTestScopedDependency>jakarta.annotation:jakarta.annotation-api</ignoredNonTestScopedDependency>
+                            </ignoredNonTestScopedDependencies>
                         </configuration>
                     </execution>
                 </executions>
@@ -325,7 +323,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.10.1</version>
+                <version>3.11.0</version>
                 <configuration>
                     <source>${project.build.source}</source>
                     <target>${project.build.target}</target>
@@ -336,6 +334,18 @@
                     </compilerArgs>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>3.1.2</version>
+                <dependencies>
+                    <dependency>
+                        <groupId>org.junit.jupiter</groupId>
+                        <artifactId>junit-jupiter-engine</artifactId>
+                        <version>${junit.jupiter.version}</version>
+                    </dependency>
+                </dependencies>
+            </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
@@ -363,7 +373,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>3.4.1</version>
+                <version>3.5.0</version>
                 <executions>
                     <execution>
                         <phase>package</phase>
@@ -419,7 +429,7 @@
                 <!-- Attach source jars -->
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-source-plugin</artifactId>
-                <version>3.2.1</version>
+                <version>3.3.0</version>
                 <configuration>
                     <archive>
                         <manifest>
@@ -452,7 +462,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-enforcer-plugin</artifactId>
-                <version>3.1.0</version>
+                <version>3.3.0</version>
                 <executions>
                     <execution>
                         <id>enforce-java</id>
@@ -473,12 +483,12 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-gpg-plugin</artifactId>
-                <version>3.0.1</version>
+                <version>3.1.0</version>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-release-plugin</artifactId>
-                <version>2.5.3</version>
+                <version>3.0.1</version>
                 <configuration>
                     <mavenExecutorId>forked-path</mavenExecutorId> <!-- avoid a bug with GPG plugin hanging https://jira.codehaus.org/browse/MGPG-9 -->
                     <autoVersionSubmodules>true</autoVersionSubmodules>
diff --git a/src/test/java/org/humanistika/oxygen/tei/completer/XPathUtilTest.java b/src/test/java/org/humanistika/oxygen/tei/completer/XPathUtilTest.java
index b6479b6..deb3be7 100644
--- a/src/test/java/org/humanistika/oxygen/tei/completer/XPathUtilTest.java
+++ b/src/test/java/org/humanistika/oxygen/tei/completer/XPathUtilTest.java
@@ -23,10 +23,11 @@
 
 import static com.evolvedbinary.xpath.parser.ast.QNameW.WILDCARD;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 /**
  * @author Adam Retter, Evolved Binary Ltd
@@ -66,14 +67,18 @@ public void isSubset() {
 //        assertTrue(XPathUtil.isSubset("/TEI/text[1]/body[1]/p[2]/w[7]/@lemma", "//w"));
     }
 
-    @Test(expected = IllegalArgumentException.class)
+    @Test
     public void isSubset_illegalSubset() {
-        XPathUtil.isSubset("a/b", "//a");
+        assertThrows(IllegalArgumentException.class, () ->
+                XPathUtil.isSubset("a/b", "//a")
+        );
     }
 
-    @Test(expected = IllegalArgumentException.class)
+    @Test
     public void isSubset_illegalSuperset() {
-        XPathUtil.isSubset("//a", "a/b");
+        assertThrows(IllegalArgumentException.class, () ->
+                XPathUtil.isSubset("//a", "a/b")
+        );
     }
 
     @Test
diff --git a/src/test/java/org/humanistika/oxygen/tei/completer/remote/impl/JerseyClientTest.java b/src/test/java/org/humanistika/oxygen/tei/completer/remote/impl/JerseyClientTest.java
index 67b9ed4..7e54180 100644
--- a/src/test/java/org/humanistika/oxygen/tei/completer/remote/impl/JerseyClientTest.java
+++ b/src/test/java/org/humanistika/oxygen/tei/completer/remote/impl/JerseyClientTest.java
@@ -30,8 +30,8 @@
 import org.humanistika.oxygen.tei.completer.configuration.beans.ResponseAction;
 import org.humanistika.oxygen.tei.completer.remote.ClientFactory.AuthenticationType;
 import javax.annotation.Nullable;
-import org.junit.Ignore;
-import org.junit.Test;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
 
 import javax.annotation.security.PermitAll;
 import javax.annotation.security.RolesAllowed;
@@ -53,7 +53,7 @@
 import java.security.Principal;
 import java.util.zip.GZIPOutputStream;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 /**
  * Integration tests for {@link org.humanistika.oxygen.tei.completer.remote.impl.JerseyClient}
@@ -492,7 +492,7 @@ public void secure_preemptiveBasic_GetLemmaSelectionDependent_Xml() {
         assertEquals(expectedSuggestions.getSuggestion(), suggestions.getSuggestion());
     }
 
-    @Ignore("Requires non-preemptive support in Jersey Server. See https://java.net/jira/browse/JERSEY-2908")
+    @Disabled("Requires non-preemptive support in Jersey Server. See https://java.net/jira/browse/JERSEY-2908")
     @Test
     public void secure_nonPreemptiveBasic_GetLemmaSelection_Xml() {
         final String selection = "some-selection";
@@ -507,7 +507,7 @@ public void secure_nonPreemptiveBasic_GetLemmaSelection_Xml() {
         assertEquals(expectedSuggestions.getSuggestion(), suggestions.getSuggestion());
     }
 
-    @Ignore("Requires non-preemptive support in Jersey Server. See https://java.net/jira/browse/JERSEY-2908")
+    @Disabled("Requires non-preemptive support in Jersey Server. See https://java.net/jira/browse/JERSEY-2908")
     @Test
     public void secure_nonPreemptiveBasic_GetLemmaSelectionDependent_Xml() {
         final String selection = "some-selection";
@@ -522,7 +522,7 @@ public void secure_nonPreemptiveBasic_GetLemmaSelectionDependent_Xml() {
         assertEquals(expectedSuggestions.getSuggestion(), suggestions.getSuggestion());
     }
 
-    @Ignore("Requires non-preemptive support in Jersey Server. See https://java.net/jira/browse/JERSEY-2908")
+    @Disabled("Requires non-preemptive support in Jersey Server. See https://java.net/jira/browse/JERSEY-2908")
     @Test
     public void secure_Digest_GetLemmaSelection_Xml() {
         final String selection = "some-selection";
@@ -537,7 +537,7 @@ public void secure_Digest_GetLemmaSelection_Xml() {
         assertEquals(expectedSuggestions.getSuggestion(), suggestions.getSuggestion());
     }
 
-    @Ignore("Requires non-preemptive support in Jersey Server. See https://java.net/jira/browse/JERSEY-2908")
+    @Disabled("Requires non-preemptive support in Jersey Server. See https://java.net/jira/browse/JERSEY-2908")
     @Test
     public void secure_Digest_GetLemmaSelectionDependent_Xml() {
         final String selection = "some-selection";
@@ -552,7 +552,7 @@ public void secure_Digest_GetLemmaSelectionDependent_Xml() {
         assertEquals(expectedSuggestions.getSuggestion(), suggestions.getSuggestion());
     }
 
-    @Ignore("Requires non-preemptive support in Jersey Server. See https://java.net/jira/browse/JERSEY-2908")
+    @Disabled("Requires non-preemptive support in Jersey Server. See https://java.net/jira/browse/JERSEY-2908")
     @Test
     public void secure_nonPreemptiveBasicDigest_GetLemmaSelection_Xml() {
         final String selection = "some-selection";
@@ -567,7 +567,7 @@ public void secure_nonPreemptiveBasicDigest_GetLemmaSelection_Xml() {
         assertEquals(expectedSuggestions.getSuggestion(), suggestions.getSuggestion());
     }
 
-    @Ignore("Requires non-preemptive support in Jersey Server. See https://java.net/jira/browse/JERSEY-2908")
+    @Disabled("Requires non-preemptive support in Jersey Server. See https://java.net/jira/browse/JERSEY-2908")
     @Test
     public void secure_nonPreemptiveBasicDigest_GetLemmaSelectionDependent_Xml() {
         final String selection = "some-selection";