diff --git a/src/Operation/Aggregate.php b/src/Operation/Aggregate.php
index 00d408c18..3543fc73c 100644
--- a/src/Operation/Aggregate.php
+++ b/src/Operation/Aggregate.php
@@ -48,6 +48,8 @@
  *
  * @see \MongoDB\Collection::aggregate()
  * @see https://mongodb.com/docs/manual/reference/command/aggregate/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class Aggregate implements Executable, Explainable
 {
diff --git a/src/Operation/BulkWrite.php b/src/Operation/BulkWrite.php
index 6da8a68b3..a5367bf2c 100644
--- a/src/Operation/BulkWrite.php
+++ b/src/Operation/BulkWrite.php
@@ -45,6 +45,8 @@
  * Operation for executing multiple write operations.
  *
  * @see \MongoDB\Collection::bulkWrite()
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class BulkWrite implements Executable
 {
diff --git a/src/Operation/Count.php b/src/Operation/Count.php
index b29aa826a..9f9225942 100644
--- a/src/Operation/Count.php
+++ b/src/Operation/Count.php
@@ -40,6 +40,8 @@
  *
  * @see \MongoDB\Collection::count()
  * @see https://mongodb.com/docs/manual/reference/command/count/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class Count implements Executable, Explainable
 {
diff --git a/src/Operation/CountDocuments.php b/src/Operation/CountDocuments.php
index 5d6502fca..954ea7466 100644
--- a/src/Operation/CountDocuments.php
+++ b/src/Operation/CountDocuments.php
@@ -36,6 +36,8 @@
  *
  * @see \MongoDB\Collection::countDocuments()
  * @see https://github.com/mongodb/specifications/blob/master/source/crud/crud.rst#countdocuments
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class CountDocuments implements Executable
 {
diff --git a/src/Operation/CreateCollection.php b/src/Operation/CreateCollection.php
index 3292e6fa7..3f4cc881a 100644
--- a/src/Operation/CreateCollection.php
+++ b/src/Operation/CreateCollection.php
@@ -40,6 +40,8 @@
  *
  * @see \MongoDB\Database::createCollection()
  * @see https://mongodb.com/docs/manual/reference/command/create/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class CreateCollection implements Executable
 {
diff --git a/src/Operation/CreateIndexes.php b/src/Operation/CreateIndexes.php
index 396cc8163..e2ac08813 100644
--- a/src/Operation/CreateIndexes.php
+++ b/src/Operation/CreateIndexes.php
@@ -40,6 +40,8 @@
  * @see \MongoDB\Collection::createIndex()
  * @see \MongoDB\Collection::createIndexes()
  * @see https://mongodb.com/docs/manual/reference/command/createIndexes/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class CreateIndexes implements Executable
 {
diff --git a/src/Operation/CreateSearchIndexes.php b/src/Operation/CreateSearchIndexes.php
index fd27b043c..d5be61116 100644
--- a/src/Operation/CreateSearchIndexes.php
+++ b/src/Operation/CreateSearchIndexes.php
@@ -36,6 +36,8 @@
  * @see \MongoDB\Collection::createSearchIndex()
  * @see \MongoDB\Collection::createSearchIndexes()
  * @see https://mongodb.com/docs/manual/reference/command/createSearchIndexes/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class CreateSearchIndexes implements Executable
 {
diff --git a/src/Operation/DatabaseCommand.php b/src/Operation/DatabaseCommand.php
index 4ae8214f1..7ea406baa 100644
--- a/src/Operation/DatabaseCommand.php
+++ b/src/Operation/DatabaseCommand.php
@@ -31,6 +31,8 @@
  * Operation for executing a database command.
  *
  * @see \MongoDB\Database::command()
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class DatabaseCommand implements Executable
 {
diff --git a/src/Operation/DeleteMany.php b/src/Operation/DeleteMany.php
index 20ca38d1d..d6d443b32 100644
--- a/src/Operation/DeleteMany.php
+++ b/src/Operation/DeleteMany.php
@@ -28,6 +28,8 @@
  *
  * @see \MongoDB\Collection::deleteOne()
  * @see https://mongodb.com/docs/manual/reference/command/delete/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class DeleteMany implements Executable, Explainable
 {
diff --git a/src/Operation/DeleteOne.php b/src/Operation/DeleteOne.php
index 1aaad5d27..8bbdb45ce 100644
--- a/src/Operation/DeleteOne.php
+++ b/src/Operation/DeleteOne.php
@@ -28,6 +28,8 @@
  *
  * @see \MongoDB\Collection::deleteOne()
  * @see https://mongodb.com/docs/manual/reference/command/delete/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class DeleteOne implements Executable, Explainable
 {
diff --git a/src/Operation/Distinct.php b/src/Operation/Distinct.php
index 1483012f3..171a18269 100644
--- a/src/Operation/Distinct.php
+++ b/src/Operation/Distinct.php
@@ -39,6 +39,8 @@
  *
  * @see \MongoDB\Collection::distinct()
  * @see https://mongodb.com/docs/manual/reference/command/distinct/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class Distinct implements Executable, Explainable
 {
diff --git a/src/Operation/DropCollection.php b/src/Operation/DropCollection.php
index a467a7391..d19859de1 100644
--- a/src/Operation/DropCollection.php
+++ b/src/Operation/DropCollection.php
@@ -35,6 +35,8 @@
  * @see \MongoDB\Collection::drop()
  * @see \MongoDB\Database::dropCollection()
  * @see https://mongodb.com/docs/manual/reference/command/drop/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class DropCollection implements Executable
 {
diff --git a/src/Operation/DropDatabase.php b/src/Operation/DropDatabase.php
index 15cb0c34e..290887900 100644
--- a/src/Operation/DropDatabase.php
+++ b/src/Operation/DropDatabase.php
@@ -33,6 +33,8 @@
  * @see \MongoDB\Client::dropDatabase()
  * @see \MongoDB\Database::drop()
  * @see https://mongodb.com/docs/manual/reference/command/dropDatabase/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class DropDatabase implements Executable
 {
diff --git a/src/Operation/DropIndexes.php b/src/Operation/DropIndexes.php
index c5302e250..8fde88b4d 100644
--- a/src/Operation/DropIndexes.php
+++ b/src/Operation/DropIndexes.php
@@ -34,6 +34,8 @@
  *
  * @see \MongoDB\Collection::dropIndexes()
  * @see https://mongodb.com/docs/manual/reference/command/dropIndexes/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class DropIndexes implements Executable
 {
diff --git a/src/Operation/DropSearchIndex.php b/src/Operation/DropSearchIndex.php
index 42fc58baa..e65adee6a 100644
--- a/src/Operation/DropSearchIndex.php
+++ b/src/Operation/DropSearchIndex.php
@@ -29,6 +29,8 @@
  *
  * @see \MongoDB\Collection::dropSearchIndexes()
  * @see https://mongodb.com/docs/manual/reference/command/dropSearchIndexes/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class DropSearchIndex implements Executable
 {
diff --git a/src/Operation/EstimatedDocumentCount.php b/src/Operation/EstimatedDocumentCount.php
index e3c240c78..db876c71c 100644
--- a/src/Operation/EstimatedDocumentCount.php
+++ b/src/Operation/EstimatedDocumentCount.php
@@ -34,6 +34,8 @@
  *
  * @see \MongoDB\Collection::estimatedDocumentCount()
  * @see https://mongodb.com/docs/manual/reference/command/count/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class EstimatedDocumentCount implements Executable, Explainable
 {
diff --git a/src/Operation/Explain.php b/src/Operation/Explain.php
index 1c132b2f5..ea4572fa6 100644
--- a/src/Operation/Explain.php
+++ b/src/Operation/Explain.php
@@ -34,6 +34,8 @@
  *
  * @see \MongoDB\Collection::explain()
  * @see https://mongodb.com/docs/manual/reference/command/explain/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class Explain implements Executable
 {
diff --git a/src/Operation/Find.php b/src/Operation/Find.php
index 13944a682..1d2dfb388 100644
--- a/src/Operation/Find.php
+++ b/src/Operation/Find.php
@@ -47,6 +47,8 @@
  * @see \MongoDB\Collection::find()
  * @see https://mongodb.com/docs/manual/tutorial/query-documents/
  * @see https://mongodb.com/docs/manual/reference/operator/query-modifier/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class Find implements Executable, Explainable
 {
diff --git a/src/Operation/FindOne.php b/src/Operation/FindOne.php
index 6fdff0a29..161d01dd0 100644
--- a/src/Operation/FindOne.php
+++ b/src/Operation/FindOne.php
@@ -30,6 +30,8 @@
  * @see \MongoDB\Collection::findOne()
  * @see https://mongodb.com/docs/manual/tutorial/query-documents/
  * @see https://mongodb.com/docs/manual/reference/operator/query-modifier/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class FindOne implements Executable, Explainable
 {
diff --git a/src/Operation/FindOneAndDelete.php b/src/Operation/FindOneAndDelete.php
index ae5148872..a560ee4c6 100644
--- a/src/Operation/FindOneAndDelete.php
+++ b/src/Operation/FindOneAndDelete.php
@@ -29,6 +29,8 @@
  *
  * @see \MongoDB\Collection::findOneAndDelete()
  * @see https://mongodb.com/docs/manual/reference/command/findAndModify/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class FindOneAndDelete implements Executable, Explainable
 {
diff --git a/src/Operation/FindOneAndReplace.php b/src/Operation/FindOneAndReplace.php
index 6f4409406..dfd761305 100644
--- a/src/Operation/FindOneAndReplace.php
+++ b/src/Operation/FindOneAndReplace.php
@@ -34,6 +34,8 @@
  *
  * @see \MongoDB\Collection::findOneAndReplace()
  * @see https://mongodb.com/docs/manual/reference/command/findAndModify/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class FindOneAndReplace implements Executable, Explainable
 {
diff --git a/src/Operation/FindOneAndUpdate.php b/src/Operation/FindOneAndUpdate.php
index 0fbe127d0..3566c9822 100644
--- a/src/Operation/FindOneAndUpdate.php
+++ b/src/Operation/FindOneAndUpdate.php
@@ -33,6 +33,8 @@
  *
  * @see \MongoDB\Collection::findOneAndUpdate()
  * @see https://mongodb.com/docs/manual/reference/command/findAndModify/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class FindOneAndUpdate implements Executable, Explainable
 {
diff --git a/src/Operation/InsertMany.php b/src/Operation/InsertMany.php
index 01640da2f..5e227cbc2 100644
--- a/src/Operation/InsertMany.php
+++ b/src/Operation/InsertMany.php
@@ -37,6 +37,8 @@
  *
  * @see \MongoDB\Collection::insertMany()
  * @see https://mongodb.com/docs/manual/reference/command/insert/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class InsertMany implements Executable
 {
diff --git a/src/Operation/InsertOne.php b/src/Operation/InsertOne.php
index 8626364f8..6d8f58cd8 100644
--- a/src/Operation/InsertOne.php
+++ b/src/Operation/InsertOne.php
@@ -35,6 +35,8 @@
  *
  * @see \MongoDB\Collection::insertOne()
  * @see https://mongodb.com/docs/manual/reference/command/insert/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class InsertOne implements Executable
 {
diff --git a/src/Operation/ListCollectionNames.php b/src/Operation/ListCollectionNames.php
index f2124c4d4..fe0ea12c6 100644
--- a/src/Operation/ListCollectionNames.php
+++ b/src/Operation/ListCollectionNames.php
@@ -29,6 +29,8 @@
  *
  * @see \MongoDB\Database::listCollectionNames()
  * @see https://mongodb.com/docs/manual/reference/command/listCollections/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class ListCollectionNames implements Executable
 {
diff --git a/src/Operation/ListCollections.php b/src/Operation/ListCollections.php
index 340c11017..29b53df7c 100644
--- a/src/Operation/ListCollections.php
+++ b/src/Operation/ListCollections.php
@@ -29,6 +29,8 @@
  *
  * @see \MongoDB\Database::listCollections()
  * @see https://mongodb.com/docs/manual/reference/command/listCollections/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class ListCollections implements Executable
 {
diff --git a/src/Operation/ListDatabaseNames.php b/src/Operation/ListDatabaseNames.php
index 7b6a529b4..f7301c169 100644
--- a/src/Operation/ListDatabaseNames.php
+++ b/src/Operation/ListDatabaseNames.php
@@ -32,6 +32,8 @@
  *
  * @see \MongoDB\Client::listDatabaseNames()
  * @see https://mongodb.com/docs/manual/reference/command/listDatabases/#mongodb-dbcommand-dbcmd.listDatabases
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class ListDatabaseNames implements Executable
 {
diff --git a/src/Operation/ListDatabases.php b/src/Operation/ListDatabases.php
index ee90cca65..2e7e36b22 100644
--- a/src/Operation/ListDatabases.php
+++ b/src/Operation/ListDatabases.php
@@ -29,7 +29,9 @@
  * Operation for the ListDatabases command.
  *
  * @see \MongoDB\Client::listDatabases()
- * @see https://mongodb.com/docs/manual/reference/command/listDatabases/#mongodb-dbcommand-dbcmd.listDatabases`
+ * @see https://mongodb.com/docs/manual/reference/command/listDatabases/#mongodb-dbcommand-dbcmd.listDatabases
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class ListDatabases implements Executable
 {
diff --git a/src/Operation/ListIndexes.php b/src/Operation/ListIndexes.php
index 384a5f498..351b88bac 100644
--- a/src/Operation/ListIndexes.php
+++ b/src/Operation/ListIndexes.php
@@ -35,6 +35,8 @@
  *
  * @see \MongoDB\Collection::listIndexes()
  * @see https://mongodb.com/docs/manual/reference/command/listIndexes/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class ListIndexes implements Executable
 {
diff --git a/src/Operation/ListSearchIndexes.php b/src/Operation/ListSearchIndexes.php
index 2dbb3688b..e685da5c2 100644
--- a/src/Operation/ListSearchIndexes.php
+++ b/src/Operation/ListSearchIndexes.php
@@ -34,6 +34,8 @@
  *
  * @see \MongoDB\Collection::listSearchIndexes()
  * @see https://mongodb.com/docs/manual/reference/command/listSearchIndexes/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class ListSearchIndexes implements Executable
 {
diff --git a/src/Operation/MapReduce.php b/src/Operation/MapReduce.php
index faf91019c..a62dd2f86 100644
--- a/src/Operation/MapReduce.php
+++ b/src/Operation/MapReduce.php
@@ -53,6 +53,8 @@
  * @see \MongoDB\Collection::mapReduce()
  * @see https://mongodb.com/docs/manual/reference/command/mapReduce/
  * @psalm-import-type MapReduceCallable from MapReduceResult
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class MapReduce implements Executable
 {
diff --git a/src/Operation/ModifyCollection.php b/src/Operation/ModifyCollection.php
index 53eaa9e09..f8d0c721d 100644
--- a/src/Operation/ModifyCollection.php
+++ b/src/Operation/ModifyCollection.php
@@ -32,6 +32,8 @@
  *
  * @see \MongoDB\Database::modifyCollection()
  * @see https://mongodb.com/docs/manual/reference/command/collMod/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class ModifyCollection implements Executable
 {
diff --git a/src/Operation/RenameCollection.php b/src/Operation/RenameCollection.php
index 5b69cce41..245231a13 100644
--- a/src/Operation/RenameCollection.php
+++ b/src/Operation/RenameCollection.php
@@ -35,6 +35,8 @@
  * @see \MongoDB\Collection::rename()
  * @see \MongoDB\Database::renameCollection()
  * @see https://mongodb.com/docs/manual/reference/command/renameCollection/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class RenameCollection implements Executable
 {
diff --git a/src/Operation/ReplaceOne.php b/src/Operation/ReplaceOne.php
index 32bf5a06d..3cec99ff0 100644
--- a/src/Operation/ReplaceOne.php
+++ b/src/Operation/ReplaceOne.php
@@ -33,6 +33,8 @@
  *
  * @see \MongoDB\Collection::replaceOne()
  * @see https://mongodb.com/docs/manual/reference/command/update/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class ReplaceOne implements Executable
 {
diff --git a/src/Operation/UpdateMany.php b/src/Operation/UpdateMany.php
index e61731622..f600d46e6 100644
--- a/src/Operation/UpdateMany.php
+++ b/src/Operation/UpdateMany.php
@@ -31,6 +31,8 @@
  *
  * @see \MongoDB\Collection::updateMany()
  * @see https://mongodb.com/docs/manual/reference/command/update/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class UpdateMany implements Executable, Explainable
 {
diff --git a/src/Operation/UpdateOne.php b/src/Operation/UpdateOne.php
index 40d71addf..17bc4a554 100644
--- a/src/Operation/UpdateOne.php
+++ b/src/Operation/UpdateOne.php
@@ -31,6 +31,8 @@
  *
  * @see \MongoDB\Collection::updateOne()
  * @see https://mongodb.com/docs/manual/reference/command/update/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class UpdateOne implements Executable, Explainable
 {
diff --git a/src/Operation/UpdateSearchIndex.php b/src/Operation/UpdateSearchIndex.php
index 31d86ca8e..effb4a942 100644
--- a/src/Operation/UpdateSearchIndex.php
+++ b/src/Operation/UpdateSearchIndex.php
@@ -30,6 +30,8 @@
  *
  * @see \MongoDB\Collection::updateSearchIndexes()
  * @see https://mongodb.com/docs/manual/reference/command/updateSearchIndexes/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class UpdateSearchIndex implements Executable
 {
diff --git a/src/Operation/Watch.php b/src/Operation/Watch.php
index 09f8b659b..d8a1a9f27 100644
--- a/src/Operation/Watch.php
+++ b/src/Operation/Watch.php
@@ -56,6 +56,8 @@
  *
  * @see \MongoDB\Collection::watch()
  * @see https://mongodb.com/docs/manual/changeStreams/
+ *
+ * @final extending this class will not be supported in v2.0.0
  */
 class Watch implements Executable, /* @internal */ CommandSubscriber
 {