diff --git a/homeassistant/loader.py b/homeassistant/loader.py
index 30a5a2a7ceb..44823720ea5 100644
--- a/homeassistant/loader.py
+++ b/homeassistant/loader.py
@@ -49,10 +49,9 @@ CUSTOM_WARNING = (
 )
 CUSTOM_WARNING_VERSION_MISSING = (
     "No 'version' key in the manifest file for "
-    "custom integration '%s'. This will not be "
-    "allowed in a future version of Home "
-    "Assistant. Please report this to the "
-    "maintainer of '%s'"
+    "custom integration '%s'. As of Home Assistant "
+    "2021.6, this integration will no longer be "
+    "loaded. Please report this to the maintainer of '%s'"
 )
 CUSTOM_WARNING_VERSION_TYPE = (
     "'%s' is not a valid version for "