diff --git a/processing/src/main/java/org/apache/druid/metadata/EntryExistsException.java b/processing/src/main/java/org/apache/druid/metadata/EntryExistsException.java
index f8a7d860d53a..445ad7ad7b3c 100644
--- a/processing/src/main/java/org/apache/druid/metadata/EntryExistsException.java
+++ b/processing/src/main/java/org/apache/druid/metadata/EntryExistsException.java
@@ -25,7 +25,11 @@
 /**
  * A non-transient Druid metadata exception thrown when trying to insert a
  * duplicate entry in the metadata.
+ *
+ * @deprecated Usages of this exception will be replaced by the new
+ * {@link org.apache.druid.error.DruidException} in a future release.
  */
+@Deprecated
 public class EntryExistsException extends DruidException
 {
 
diff --git a/server/src/main/java/org/apache/druid/metadata/UnknownSegmentIdsException.java b/server/src/main/java/org/apache/druid/metadata/UnknownSegmentIdsException.java
index e3d1cc32c586..2c7e3996cba3 100644
--- a/server/src/main/java/org/apache/druid/metadata/UnknownSegmentIdsException.java
+++ b/server/src/main/java/org/apache/druid/metadata/UnknownSegmentIdsException.java
@@ -23,7 +23,11 @@
 
 /**
  * Exception thrown by {@link SegmentsMetadataManager} when a segment id is unknown.
+ *
+ * @deprecated Usages of this exception will be replaced by the new
+ * {@link org.apache.druid.error.DruidException} in a future release.
  */
+@Deprecated
 public class UnknownSegmentIdsException extends Exception
 {
   private final Collection<String> unknownSegmentIds;