diff --git a/java/google/registry/model/registry/Registry.java b/java/google/registry/model/registry/Registry.java
index f572c65ec..f93ba9cc2 100644
--- a/java/google/registry/model/registry/Registry.java
+++ b/java/google/registry/model/registry/Registry.java
@@ -21,6 +21,7 @@ import static com.google.common.base.Predicates.not;
 import static google.registry.config.RegistryConfig.getSingletonCacheRefreshDuration;
 import static google.registry.model.common.EntityGroupRoot.getCrossTldKey;
 import static google.registry.model.ofy.ObjectifyService.ofy;
+import static google.registry.util.CollectionUtils.isNullOrEmpty;
 import static google.registry.util.CollectionUtils.nullToEmptyImmutableCopy;
 import static google.registry.util.DateTimeUtils.END_OF_TIME;
 import static google.registry.util.DateTimeUtils.START_OF_TIME;
@@ -49,6 +50,7 @@ import com.googlecode.objectify.annotation.Embed;
 import com.googlecode.objectify.annotation.Entity;
 import com.googlecode.objectify.annotation.Id;
 import com.googlecode.objectify.annotation.Mapify;
+import com.googlecode.objectify.annotation.OnLoad;
 import com.googlecode.objectify.annotation.OnSave;
 import com.googlecode.objectify.annotation.Parent;
 import google.registry.model.Buildable;
@@ -269,9 +271,30 @@ public class Registry extends ImmutableObject implements Buildable {
    *
    * <p>This must be a valid key for the map of DnsWriters injected by <code>
    * @Inject Map<String, DnsWriter></code>
+   *
+   * @deprecated by dnsWriters
    */
+  // TODO(b/63385623): Delete this field when the data migration is complete.
+  @Deprecated
   String dnsWriter;
 
+  /**
+   * The set of name(s) of the {@code DnsWriter} implementations that this TLD uses.
+   *
+   * <p>There must be at least one entry in this set.
+   *
+   * <p>All entries of this list must be valid keys for the map of {@code DnsWriter}s injected by
+   * <code>@Inject Map<String, DnsWriter></code>
+   */
+  Set<String> dnsWriters;
+
+  @OnLoad
+  public void migrateDnsWriters() {
+    if (isNullOrEmpty(dnsWriters)) {
+      dnsWriters = ImmutableSet.of(dnsWriter);
+    }
+  }
+
   /**
    * The unicode-aware representation of the TLD associated with this {@link Registry}.
    *
@@ -588,10 +611,15 @@ public class Registry extends ImmutableObject implements Buildable {
     return pricingEngineClassName;
   }
 
+  @Deprecated
   public String getDnsWriter() {
     return dnsWriter;
   }
 
+  public ImmutableSet<String> getDnsWriters() {
+    return ImmutableSet.copyOf(dnsWriters);
+  }
+
   public ImmutableSet<String> getAllowedRegistrantContactIds() {
     return nullToEmptyImmutableCopy(allowedRegistrantContactIds);
   }
@@ -676,6 +704,7 @@ public class Registry extends ImmutableObject implements Buildable {
 
     public Builder setDnsWriter(String dnsWriter) {
       getInstance().dnsWriter = checkArgumentNotNull(dnsWriter);
+      getInstance().dnsWriters = ImmutableSet.of(dnsWriter);
       return this;
     }
 
@@ -946,6 +975,10 @@ public class Registry extends ImmutableObject implements Buildable {
       checkArgumentNotNull(
           instance.dnsWriter,
           "A DNS writer must be specified. VoidDnsWriter can be used if DNS writing isn't wanted");
+      checkArgument(
+          instance.dnsWriters != null && !instance.dnsWriters.isEmpty(),
+          "At least one DNS writer must be specified."
+              + " VoidDnsWriter can be used if DNS writing isn't desired");
       instance.tldStrId = tldName;
       instance.tldUnicode = Idn.toUnicode(tldName);
       return super.build();
diff --git a/javatests/google/registry/model/schema.txt b/javatests/google/registry/model/schema.txt
index 4ec26a6e9..2b8eb8109 100644
--- a/javatests/google/registry/model/schema.txt
+++ b/javatests/google/registry/model/schema.txt
@@ -700,6 +700,7 @@ class google.registry.model.registry.Registry {
   java.util.Set<com.googlecode.objectify.Key<google.registry.model.registry.label.ReservedList>> reservedLists;
   java.util.Set<java.lang.String> allowedFullyQualifiedHostNames;
   java.util.Set<java.lang.String> allowedRegistrantContactIds;
+  java.util.Set<java.lang.String> dnsWriters;
   org.joda.money.CurrencyUnit currency;
   org.joda.money.Money createBillingCost;
   org.joda.money.Money restoreBillingCost;
diff --git a/javatests/google/registry/tools/SetupOteCommandTest.java b/javatests/google/registry/tools/SetupOteCommandTest.java
index 36584727d..c1d80c282 100644
--- a/javatests/google/registry/tools/SetupOteCommandTest.java
+++ b/javatests/google/registry/tools/SetupOteCommandTest.java
@@ -68,6 +68,7 @@ public class SetupOteCommandTest extends CommandTestCase<SetupOteCommand> {
     assertThat(registry.getRoidSuffix()).isEqualTo(roidSuffix);
     assertThat(registry.getTldState(DateTime.now(UTC))).isEqualTo(tldState);
     assertThat(registry.getDnsWriter()).isEqualTo(dnsWriter);
+    assertThat(registry.getDnsWriters()).containsExactly(dnsWriter);
     assertThat(registry.getPremiumList()).isNotNull();
     assertThat(registry.getPremiumList().getName()).isEqualTo(premiumList);
     assertThat(registry.getAddGracePeriodLength()).isEqualTo(addGracePeriodLength);
diff --git a/javatests/google/registry/tools/UpdateTldCommandTest.java b/javatests/google/registry/tools/UpdateTldCommandTest.java
index 59911798f..fd02ff6f3 100644
--- a/javatests/google/registry/tools/UpdateTldCommandTest.java
+++ b/javatests/google/registry/tools/UpdateTldCommandTest.java
@@ -177,8 +177,11 @@ public class UpdateTldCommandTest extends CommandTestCase<UpdateTldCommand> {
   @Test
   public void testSuccess_dnsWriter() throws Exception {
     assertThat(Registry.get("xn--q9jyb4c").getDnsWriter()).isEqualTo("VoidDnsWriter");
+    assertThat(Registry.get("xn--q9jyb4c").getDnsWriters()).containsExactly("VoidDnsWriter");
+
     runCommandForced("--dns_writer=FooDnsWriter", "xn--q9jyb4c");
     assertThat(Registry.get("xn--q9jyb4c").getDnsWriter()).isEqualTo("FooDnsWriter");
+    assertThat(Registry.get("xn--q9jyb4c").getDnsWriters()).containsExactly("FooDnsWriter");
   }
 
   @Test