diff --git a/slack-api-client/src/main/java/com/slack/api/methods/AsyncMethodsClient.java b/slack-api-client/src/main/java/com/slack/api/methods/AsyncMethodsClient.java
index 724ee50a8..d45dc67f4 100644
--- a/slack-api-client/src/main/java/com/slack/api/methods/AsyncMethodsClient.java
+++ b/slack-api-client/src/main/java/com/slack/api/methods/AsyncMethodsClient.java
@@ -1070,8 +1070,10 @@ CompletableFuture<AdminConversationsWhitelistListGroupsLinkedToChannelResponse>
 
     CompletableFuture<FilesSharedPublicURLResponse> filesSharedPublicURL(RequestConfigurator<FilesSharedPublicURLRequest.FilesSharedPublicURLRequestBuilder> req);
 
+    @Deprecated // https://api.slack.com/changelog/2024-04-a-better-way-to-upload-files-is-here-to-stay
     CompletableFuture<FilesUploadResponse> filesUpload(FilesUploadRequest req);
 
+    @Deprecated // https://api.slack.com/changelog/2024-04-a-better-way-to-upload-files-is-here-to-stay
     CompletableFuture<FilesUploadResponse> filesUpload(RequestConfigurator<FilesUploadRequest.FilesUploadRequestBuilder> req);
 
     CompletableFuture<FilesGetUploadURLExternalResponse> filesGetUploadURLExternal(FilesGetUploadURLExternalRequest req);
@@ -1230,8 +1232,10 @@ CompletableFuture<AdminConversationsWhitelistListGroupsLinkedToChannelResponse>
     // rtm
     // ------------------------------
 
+    @Deprecated // https://api.slack.com/changelog/2024-04-discontinuing-new-creation-of-classic-slack-apps-and-custom-bots
     CompletableFuture<RTMConnectResponse> rtmConnect(RTMConnectRequest req);
 
+    @Deprecated // https://api.slack.com/changelog/2024-04-discontinuing-new-creation-of-classic-slack-apps-and-custom-bots
     CompletableFuture<RTMConnectResponse> rtmConnect(RequestConfigurator<RTMConnectRequest.RTMConnectRequestBuilder> req);
 
     @Deprecated
diff --git a/slack-api-client/src/main/java/com/slack/api/methods/Methods.java b/slack-api-client/src/main/java/com/slack/api/methods/Methods.java
index 581b1c64a..79c94a1e0 100644
--- a/slack-api-client/src/main/java/com/slack/api/methods/Methods.java
+++ b/slack-api-client/src/main/java/com/slack/api/methods/Methods.java
@@ -447,6 +447,7 @@ private Methods() {
     public static final String FILES_LIST = "files.list";
     public static final String FILES_REVOKE_PUBLIC_URL = "files.revokePublicURL";
     public static final String FILES_SHARED_PUBLIC_URL = "files.sharedPublicURL";
+    @Deprecated // https://api.slack.com/changelog/2024-04-a-better-way-to-upload-files-is-here-to-stay
     public static final String FILES_UPLOAD = "files.upload";
 
     public static final String FILES_GET_UPLOAD_URL_EXTERNAL = "files.getUploadURLExternal";
@@ -598,6 +599,7 @@ private Methods() {
     // rtm
     // ------------------------------
 
+    @Deprecated // https://api.slack.com/changelog/2024-04-discontinuing-new-creation-of-classic-slack-apps-and-custom-bots
     public static final String RTM_CONNECT = "rtm.connect";
     @Deprecated // https://api.slack.com/changelog/2021-10-rtm-start-to-stop
     public static final String RTM_START = "rtm.start";
diff --git a/slack-api-client/src/main/java/com/slack/api/methods/MethodsClient.java b/slack-api-client/src/main/java/com/slack/api/methods/MethodsClient.java
index 22106a2ce..bf9f2f5b0 100644
--- a/slack-api-client/src/main/java/com/slack/api/methods/MethodsClient.java
+++ b/slack-api-client/src/main/java/com/slack/api/methods/MethodsClient.java
@@ -1356,8 +1356,10 @@ AdminUsergroupsRemoveChannelsResponse adminUsergroupsRemoveChannels(
 
     FilesSharedPublicURLResponse filesSharedPublicURL(RequestConfigurator<FilesSharedPublicURLRequest.FilesSharedPublicURLRequestBuilder> req) throws IOException, SlackApiException;
 
+    @Deprecated // https://api.slack.com/changelog/2024-04-a-better-way-to-upload-files-is-here-to-stay
     FilesUploadResponse filesUpload(FilesUploadRequest req) throws IOException, SlackApiException;
 
+    @Deprecated // https://api.slack.com/changelog/2024-04-a-better-way-to-upload-files-is-here-to-stay
     FilesUploadResponse filesUpload(RequestConfigurator<FilesUploadRequest.FilesUploadRequestBuilder> req) throws IOException, SlackApiException;
 
     FilesGetUploadURLExternalResponse filesGetUploadURLExternal(FilesGetUploadURLExternalRequest req) throws IOException, SlackApiException;
@@ -1772,8 +1774,10 @@ AdminUsergroupsRemoveChannelsResponse adminUsergroupsRemoveChannels(
     // rtm
     // ------------------------------
 
+    @Deprecated // https://api.slack.com/changelog/2024-04-discontinuing-new-creation-of-classic-slack-apps-and-custom-bots
     RTMConnectResponse rtmConnect(RTMConnectRequest req) throws IOException, SlackApiException;
 
+    @Deprecated // https://api.slack.com/changelog/2024-04-discontinuing-new-creation-of-classic-slack-apps-and-custom-bots
     RTMConnectResponse rtmConnect(RequestConfigurator<RTMConnectRequest.RTMConnectRequestBuilder> req) throws IOException, SlackApiException;
 
     @Deprecated
diff --git a/slack-api-client/src/main/java/com/slack/api/methods/impl/AsyncMethodsClientImpl.java b/slack-api-client/src/main/java/com/slack/api/methods/impl/AsyncMethodsClientImpl.java
index 0199d10a4..8990d8f62 100644
--- a/slack-api-client/src/main/java/com/slack/api/methods/impl/AsyncMethodsClientImpl.java
+++ b/slack-api-client/src/main/java/com/slack/api/methods/impl/AsyncMethodsClientImpl.java
@@ -1923,11 +1923,13 @@ public CompletableFuture<FilesSharedPublicURLResponse> filesSharedPublicURL(Requ
     }
 
     @Override
+    @Deprecated
     public CompletableFuture<FilesUploadResponse> filesUpload(FilesUploadRequest req) {
         return executor.execute(FILES_UPLOAD, toMap(req), () -> methods.filesUpload(req));
     }
 
     @Override
+    @Deprecated
     public CompletableFuture<FilesUploadResponse> filesUpload(RequestConfigurator<FilesUploadRequest.FilesUploadRequestBuilder> req) {
         return filesUpload(req.configure(FilesUploadRequest.builder()).build());
     }
@@ -2237,11 +2239,13 @@ public CompletableFuture<RemindersListResponse> remindersList(RequestConfigurato
     }
 
     @Override
+    @Deprecated
     public CompletableFuture<RTMConnectResponse> rtmConnect(RTMConnectRequest req) {
         return executor.execute(RTM_CONNECT, toMap(req), () -> methods.rtmConnect(req));
     }
 
     @Override
+    @Deprecated
     public CompletableFuture<RTMConnectResponse> rtmConnect(RequestConfigurator<RTMConnectRequest.RTMConnectRequestBuilder> req) {
         return rtmConnect(req.configure(RTMConnectRequest.builder()).build());
     }
diff --git a/slack-api-client/src/main/java/com/slack/api/methods/impl/MethodsClientImpl.java b/slack-api-client/src/main/java/com/slack/api/methods/impl/MethodsClientImpl.java
index db60fba68..05dc90411 100644
--- a/slack-api-client/src/main/java/com/slack/api/methods/impl/MethodsClientImpl.java
+++ b/slack-api-client/src/main/java/com/slack/api/methods/impl/MethodsClientImpl.java
@@ -2906,11 +2906,13 @@ public RemindersListResponse remindersList(RequestConfigurator<RemindersListRequ
     }
 
     @Override
+    @Deprecated
     public RTMConnectResponse rtmConnect(RTMConnectRequest req) throws IOException, SlackApiException {
         return postFormWithTokenAndParseResponse(toForm(req), Methods.RTM_CONNECT, getToken(req), RTMConnectResponse.class);
     }
 
     @Override
+    @Deprecated
     public RTMConnectResponse rtmConnect(RequestConfigurator<RTMConnectRequest.RTMConnectRequestBuilder> req) throws IOException, SlackApiException {
         return rtmConnect(req.configure(RTMConnectRequest.builder()).build());
     }