diff --git a/core/src/main/java/org/testcontainers/containers/GenericContainer.java b/core/src/main/java/org/testcontainers/containers/GenericContainer.java
index a4276a09c9a..14f09448817 100644
--- a/core/src/main/java/org/testcontainers/containers/GenericContainer.java
+++ b/core/src/main/java/org/testcontainers/containers/GenericContainer.java
@@ -42,7 +42,7 @@
 import java.util.function.Consumer;
 import java.util.stream.Collectors;
 
-import static java.util.Arrays.asList;
+import static com.google.common.collect.Lists.newArrayList;
 import static org.testcontainers.containers.output.OutputFrame.OutputType.STDERR;
 import static org.testcontainers.containers.output.OutputFrame.OutputType.STDOUT;
 import static org.testcontainers.utility.CommandLine.runShellCommand;
@@ -554,7 +554,7 @@ protected void finished(Description description) {
      */
     @Override
     public SELF withExposedPorts(Integer... ports) {
-        this.setExposedPorts(asList(ports));
+        this.setExposedPorts(newArrayList(ports));
         return self();
 
     }
diff --git a/core/src/test/java/org/testcontainers/junit/GenericContainerRuleTest.java b/core/src/test/java/org/testcontainers/junit/GenericContainerRuleTest.java
index b2a4d753b2d..b5ba5e1d0ed 100644
--- a/core/src/test/java/org/testcontainers/junit/GenericContainerRuleTest.java
+++ b/core/src/test/java/org/testcontainers/junit/GenericContainerRuleTest.java
@@ -23,6 +23,7 @@
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import static org.hamcrest.CoreMatchers.equalTo;
 import static org.rnorth.visibleassertions.VisibleAssertions.*;
 import static org.testcontainers.containers.BindMode.READ_ONLY;
 import static org.testcontainers.containers.BindMode.READ_WRITE;
@@ -338,4 +339,12 @@ private BufferedReader getReaderForContainerPort80(GenericContainer container) {
             return new BufferedReader(new InputStreamReader(socket.getInputStream()));
         });
     }
+
+    @Test
+    public void addExposedPortAfterWithExposedPortsTest() {
+        redis.addExposedPort(8987);
+        assertThat("Both ports should be exposed", redis.getExposedPorts().size(), equalTo(2));
+        assertTrue("withExposedPort should be exposed", redis.getExposedPorts().contains(REDIS_PORT));
+        assertTrue("addExposedPort should be exposed", redis.getExposedPorts().contains(8987));
+    }
 }