diff --git a/src/test/java/org/datadog/jmxfetch/TestGCMetrics.java b/src/test/java/org/datadog/jmxfetch/TestGCMetrics.java
index 7d1973dd..a180c35e 100644
--- a/src/test/java/org/datadog/jmxfetch/TestGCMetrics.java
+++ b/src/test/java/org/datadog/jmxfetch/TestGCMetrics.java
@@ -148,6 +148,40 @@ public void testDefaultNewGCMetricsUseGenerationalZGC() throws IOException {
         }
     }
 
+    @Test
+    public void testDefaultNewGCMetricsIBMJ9Balanced() throws IOException {
+        try (final MisbehavingJMXServer server = new MisbehavingJMXServer.Builder().withJDKImage(
+            JDK_11_OPENJ9).appendJavaOpts("-Xgcpolicy:balanced").build()) {
+            final List<Map<String, Object>> actualMetrics = startAndGetMetrics(server, true);
+            assertThat(actualMetrics, hasSize(13));
+            assertGCMetric(actualMetrics,
+                "jvm.gc.minor_collection_count", "partial gc", "counter");
+            assertGCMetric(actualMetrics,
+                "jvm.gc.minor_collection_time", "partial gc", "counter");
+            assertGCMetric(actualMetrics,
+                "jvm.gc.major_collection_count", "global garbage collect", "counter");
+            assertGCMetric(actualMetrics,
+                "jvm.gc.major_collection_time", "global garbage collect", "counter");
+        }
+    }
+
+    @Test
+    public void testDefaultNewGCMetricsIBMJ9Gencon() throws IOException {
+        try (final MisbehavingJMXServer server = new MisbehavingJMXServer.Builder().withJDKImage(
+            JDK_11_OPENJ9).appendJavaOpts("-Xgcpolicy:gencon").build()) {
+            final List<Map<String, Object>> actualMetrics = startAndGetMetrics(server, true);
+            assertThat(actualMetrics, hasSize(13));
+            assertGCMetric(actualMetrics,
+                "jvm.gc.minor_collection_count", "scavenge", "counter");
+            assertGCMetric(actualMetrics,
+                "jvm.gc.minor_collection_time", "scavenge", "counter");
+            assertGCMetric(actualMetrics,
+                "jvm.gc.major_collection_count", "global", "counter");
+            assertGCMetric(actualMetrics,
+                "jvm.gc.major_collection_time", "global", "counter");
+        }
+    }
+    
     private List<Map<String, Object>> startAndGetMetrics(final MisbehavingJMXServer server,
         final boolean newGCMetrics) throws IOException {
         server.start();
diff --git a/src/test/java/org/datadog/jmxfetch/util/server/JDKImage.java b/src/test/java/org/datadog/jmxfetch/util/server/JDKImage.java
index 365f7bd5..19775b77 100644
--- a/src/test/java/org/datadog/jmxfetch/util/server/JDKImage.java
+++ b/src/test/java/org/datadog/jmxfetch/util/server/JDKImage.java
@@ -4,7 +4,8 @@ public enum JDKImage {
     BASE("base"),
     JDK_11("eclipse-temurin:11"),
     JDK_17("eclipse-temurin:17"),
-    JDK_21("eclipse-temurin:21");
+    JDK_21("eclipse-temurin:21"),
+    JDK_11_OPENJ9("adoptopenjdk/openjdk11-openj9:latest");
 
     private final String image;