diff --git a/lib/build.gradle b/lib/build.gradle
index c0a5ce2..24bf609 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -26,7 +26,8 @@ def getKeyPassword() {
 }
 
 dependencies {
-    testImplementation 'org.junit.jupiter:junit-jupiter:5.7.2'
+    testImplementation 'org.junit.jupiter:junit-jupiter:6.1.1'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher:6.1.1'
     testImplementation "com.github.tomakehurst:wiremock-jre8:2.32.0"
     testImplementation "org.mockito:mockito-core:3.12.4"
 
@@ -44,6 +45,11 @@ java {
     targetCompatibility = JavaVersion.VERSION_1_8
 }
 
+tasks.named('compileTestJava', JavaCompile) {
+    sourceCompatibility = JavaVersion.VERSION_17
+    targetCompatibility = JavaVersion.VERSION_17
+}
+
 tasks.named('test', Test) {
     useJUnitPlatform()
 }
diff --git a/lib/gradle.lockfile b/lib/gradle.lockfile
index cc4d350..912a6a8 100644
--- a/lib/gradle.lockfile
+++ b/lib/gradle.lockfile
@@ -34,7 +34,7 @@ org.apache.httpcomponents.core5:httpcore5-h2:5.1.1=testCompileClasspath,testRunt
 org.apache.httpcomponents.core5:httpcore5:5.1.1=testCompileClasspath,testRuntimeClasspath
 org.apache.httpcomponents:httpclient:4.5.13=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
 org.apache.httpcomponents:httpcore:4.4.13=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
-org.apiguardian:apiguardian-api:1.1.0=testCompileClasspath,testRuntimeClasspath
+org.apiguardian:apiguardian-api:1.1.2=testCompileClasspath
 org.bouncycastle:bcprov-jdk15on:1.70=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
 org.checkerframework:checker-qual:3.12.0=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
 org.eclipse.jetty.http2:http2-common:9.4.44.v20210927=testCompileClasspath,testRuntimeClasspath
@@ -62,16 +62,18 @@ org.eclipse.jetty:jetty-webapp:9.4.44.v20210927=testCompileClasspath,testRuntime
 org.eclipse.jetty:jetty-xml:9.4.44.v20210927=testCompileClasspath,testRuntimeClasspath
 org.hamcrest:hamcrest-core:2.2=testCompileClasspath,testRuntimeClasspath
 org.hamcrest:hamcrest:2.2=testCompileClasspath,testRuntimeClasspath
-org.junit.jupiter:junit-jupiter-api:5.7.2=testCompileClasspath,testRuntimeClasspath
-org.junit.jupiter:junit-jupiter-engine:5.7.2=testRuntimeClasspath
-org.junit.jupiter:junit-jupiter-params:5.7.2=testCompileClasspath,testRuntimeClasspath
-org.junit.jupiter:junit-jupiter:5.7.2=testCompileClasspath,testRuntimeClasspath
-org.junit.platform:junit-platform-commons:1.7.2=testCompileClasspath,testRuntimeClasspath
-org.junit.platform:junit-platform-engine:1.7.2=testRuntimeClasspath
-org.junit:junit-bom:5.7.2=testCompileClasspath,testRuntimeClasspath
+org.jspecify:jspecify:1.0.0=testCompileClasspath
+org.junit.jupiter:junit-jupiter-api:6.1.1=testCompileClasspath,testRuntimeClasspath
+org.junit.jupiter:junit-jupiter-engine:6.1.1=testRuntimeClasspath
+org.junit.jupiter:junit-jupiter-params:6.1.1=testCompileClasspath,testRuntimeClasspath
+org.junit.jupiter:junit-jupiter:6.1.1=testCompileClasspath,testRuntimeClasspath
+org.junit.platform:junit-platform-commons:6.1.1=testCompileClasspath,testRuntimeClasspath
+org.junit.platform:junit-platform-engine:6.1.1=testRuntimeClasspath
+org.junit.platform:junit-platform-launcher:6.1.1=testRuntimeClasspath
+org.junit:junit-bom:6.1.1=testCompileClasspath,testRuntimeClasspath
 org.mockito:mockito-core:3.12.4=testCompileClasspath,testRuntimeClasspath
 org.objenesis:objenesis:3.2=testCompileClasspath,testRuntimeClasspath
-org.opentest4j:opentest4j:1.2.0=testCompileClasspath,testRuntimeClasspath
+org.opentest4j:opentest4j:1.3.0=testCompileClasspath,testRuntimeClasspath
 org.ow2.asm:asm:9.2=testCompileClasspath,testRuntimeClasspath
 org.slf4j:slf4j-api:1.7.32=testCompileClasspath,testRuntimeClasspath
 org.xmlunit:xmlunit-core:2.8.3=testCompileClasspath,testRuntimeClasspath