diff --git a/server/src/main/java/org/elasticsearch/persistent/PersistentTasksCustomMetaData.java b/server/src/main/java/org/elasticsearch/persistent/PersistentTasksCustomMetaData.java
index 3dc9d6e15ec..09346704a80 100644
--- a/server/src/main/java/org/elasticsearch/persistent/PersistentTasksCustomMetaData.java
+++ b/server/src/main/java/org/elasticsearch/persistent/PersistentTasksCustomMetaData.java
@@ -313,7 +313,7 @@ public final class PersistentTasksCustomMetaData extends AbstractNamedDiffable<M
             id = in.readString();
             allocationId = in.readLong();
             taskName = in.readString();
-            if (in.getVersion().onOrAfter(Version.V_6_4_0)) {
+            if (in.getVersion().onOrAfter(Version.V_6_3_0)) {
                 params = (P) in.readNamedWriteable(PersistentTaskParams.class);
             } else {
                 params = (P) in.readOptionalNamedWriteable(PersistentTaskParams.class);
@@ -328,7 +328,7 @@ public final class PersistentTasksCustomMetaData extends AbstractNamedDiffable<M
             out.writeString(id);
             out.writeLong(allocationId);
             out.writeString(taskName);
-            if (out.getVersion().onOrAfter(Version.V_6_4_0)) {
+            if (out.getVersion().onOrAfter(Version.V_6_3_0)) {
                 out.writeNamedWriteable(params);
             } else {
                 out.writeOptionalNamedWriteable(params);
diff --git a/server/src/main/java/org/elasticsearch/persistent/StartPersistentTaskAction.java b/server/src/main/java/org/elasticsearch/persistent/StartPersistentTaskAction.java
index 9df93154983..6b338c24697 100644
--- a/server/src/main/java/org/elasticsearch/persistent/StartPersistentTaskAction.java
+++ b/server/src/main/java/org/elasticsearch/persistent/StartPersistentTaskAction.java
@@ -86,7 +86,7 @@ public class StartPersistentTaskAction extends Action<StartPersistentTaskAction.
             super.readFrom(in);
             taskId = in.readString();
             taskName = in.readString();
-            if (in.getVersion().onOrAfter(Version.V_6_4_0)) {
+            if (in.getVersion().onOrAfter(Version.V_6_3_0)) {
                 params = in.readNamedWriteable(PersistentTaskParams.class);
             } else {
                 params = in.readOptionalNamedWriteable(PersistentTaskParams.class);
@@ -98,7 +98,7 @@ public class StartPersistentTaskAction extends Action<StartPersistentTaskAction.
             super.writeTo(out);
             out.writeString(taskId);
             out.writeString(taskName);
-            if (out.getVersion().onOrAfter(Version.V_6_4_0)) {
+            if (out.getVersion().onOrAfter(Version.V_6_3_0)) {
                 out.writeNamedWriteable(params);
             } else {
                 out.writeOptionalNamedWriteable(params);