diff --git a/google-cloud-firestore/src/main/java/com/google/cloud/firestore/FirestoreOptions.java b/google-cloud-firestore/src/main/java/com/google/cloud/firestore/FirestoreOptions.java
index 69a59c631..b80b9dacd 100644
--- a/google-cloud-firestore/src/main/java/com/google/cloud/firestore/FirestoreOptions.java
+++ b/google-cloud-firestore/src/main/java/com/google/cloud/firestore/FirestoreOptions.java
@@ -62,8 +62,8 @@ public final class FirestoreOptions extends ServiceOptions<Firestore, FirestoreO
   private final TransportChannelProvider channelProvider;
   private final CredentialsProvider credentialsProvider;
   private final String emulatorHost;
-  private final @Nonnull FirestoreOpenTelemetryOptions openTelemetryOptions;
-  private final @Nonnull com.google.cloud.firestore.telemetry.TraceUtil traceUtil;
+  private final transient @Nonnull FirestoreOpenTelemetryOptions openTelemetryOptions;
+  private final transient @Nonnull com.google.cloud.firestore.telemetry.TraceUtil traceUtil;
 
   public static class DefaultFirestoreFactory implements FirestoreFactory {