diff --git a/docs/reference/commandline/deploy.md b/docs/reference/commandline/deploy.md
index a430a90105..a86b2b4b45 100644
--- a/docs/reference/commandline/deploy.md
+++ b/docs/reference/commandline/deploy.md
@@ -30,6 +30,7 @@ Options:
       --bundle-file string    Path to a Distributed Application Bundle file
       --compose-file string   Path to a Compose file
       --help                  Print usage
+      --prune                 Prune services that are no longer referenced
       --with-registry-auth    Send registry authentication details to Swarm agents
 ```
 
diff --git a/docs/reference/commandline/stack_deploy.md b/docs/reference/commandline/stack_deploy.md
index 39456b7ffa..d57ef0f76c 100644
--- a/docs/reference/commandline/stack_deploy.md
+++ b/docs/reference/commandline/stack_deploy.md
@@ -27,6 +27,7 @@ Options:
       --bundle-file string    Path to a Distributed Application Bundle file
   -c, --compose-file string   Path to a Compose file
       --help                  Print usage
+      --prune                 Prune services that are no longer referenced
       --with-registry-auth    Send registry authentication details to Swarm agents
 ```