diff --git a/homeassistant/components/august/diagnostics.py b/homeassistant/components/august/diagnostics.py
index 6c19d57a0c3..57e56795c2d 100644
--- a/homeassistant/components/august/diagnostics.py
+++ b/homeassistant/components/august/diagnostics.py
@@ -24,6 +24,7 @@ TO_REDACT = {
     "remoteOperateSecret",
     "users",
     "zWaveDSK",
+    "contentToken",
 }