diff --git a/doc/cli-reference/source/mistral.rst b/doc/cli-reference/source/mistral.rst
index b8c20b7fe0..6908706f8e 100644
--- a/doc/cli-reference/source/mistral.rst
+++ b/doc/cli-reference/source/mistral.rst
@@ -1068,7 +1068,7 @@ mistral run-action
 
    usage: mistral run-action [-h] [-f {html,json,shell,table,value,yaml}]
                              [-c COLUMN] [--max-width <integer>] [--noindent]
-                             [--prefix PREFIX] [-s] [-t TARGET]
+                             [--prefix PREFIX] [-s] [--run-sync] [-t TARGET]
                              name [input]
 
 Create new Action execution or just run specific action.
@@ -1089,6 +1089,9 @@ Create new Action execution or just run specific action.
 ``-s, --save-result``
   Save the result into DB.
 
+``--run-sync``
+  Run the action synchronously.
+
 ``-t TARGET, --target TARGET``
   Action will be executed on <target> executor.