diff --git a/docs/slack.md b/docs/slack.md
index 40169515e..2a287176d 100644
--- a/docs/slack.md
+++ b/docs/slack.md
@@ -55,8 +55,14 @@ Use this Slack app manifest to create the app quickly (adjust the name/command i
         "channels:history",
         "channels:read",
         "groups:history",
+        "groups:read",
+        "groups:write",
         "im:history",
+        "im:read",
+        "im:write",
         "mpim:history",
+        "mpim:read",
+        "mpim:write",
         "users:read",
         "app_mentions:read",
         "reactions:read",