diff --git a/apm-agent-core/src/test/java/co/elastic/apm/agent/MockReporter.java b/apm-agent-core/src/test/java/co/elastic/apm/agent/MockReporter.java
index 1d927c4dce..6fe269b495 100644
--- a/apm-agent-core/src/test/java/co/elastic/apm/agent/MockReporter.java
+++ b/apm-agent-core/src/test/java/co/elastic/apm/agent/MockReporter.java
@@ -40,6 +40,7 @@
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.networknt.schema.JsonSchema;
 import com.networknt.schema.JsonSchemaFactory;
+import com.networknt.schema.SpecVersion;
 import com.networknt.schema.ValidationMessage;
 import org.awaitility.core.ThrowingRunnable;
 import org.stagemonitor.configuration.ConfigurationRegistry;
@@ -810,7 +811,7 @@ private enum SchemaInstance {
 
         private static JsonSchema getSchema(String resource) {
             InputStream input = Objects.requireNonNull(MockReporter.class.getResourceAsStream(resource), "missing resource " + resource);
-            return JsonSchemaFactory.getInstance().getSchema(input);
+            return JsonSchemaFactory.getInstance(SpecVersion.VersionFlag.V4).getSchema(input);
         }
     }
 
diff --git a/pom.xml b/pom.xml
index 0e376b96b8..55daeaac73 100644
--- a/pom.xml
+++ b/pom.xml
@@ -129,7 +129,7 @@
         <version.ecs.logging>1.5.0</version.ecs.logging>
         <version.spring>5.0.15.RELEASE</version.spring>
         <version.jetty-server>9.4.11.v20180605</version.jetty-server>
-        <version.json-schema-validator>1.1.0</version.json-schema-validator>
+        <version.json-schema-validator>1.3.3</version.json-schema-validator>
         <!-- Byte Buddy and ASM must be kept in sync -->
         <version.byte-buddy>1.14.12</version.byte-buddy>
         <version.asm>9.6</version.asm>