diff --git a/docs/datasette-package-help.txt b/docs/datasette-package-help.txt
index 51f66f71..326b66cb 100644
--- a/docs/datasette-package-help.txt
+++ b/docs/datasette-package-help.txt
@@ -8,7 +8,7 @@ Options:
   -t, --tag TEXT            Name for the resulting Docker container, can optionally use
                             name:tag format
 
-  -m, --metadata FILENAME   Path to JSON file containing metadata to publish
+  -m, --metadata FILENAME   Path to JSON/YAML file containing metadata to publish
   --extra-options TEXT      Extra options to pass to datasette serve
   --branch TEXT             Install datasette from a GitHub branch e.g. master
   --template-dir DIRECTORY  Path to directory containing custom templates
diff --git a/docs/datasette-publish-cloudrun-help.txt b/docs/datasette-publish-cloudrun-help.txt
index 520e02a5..98fc9c71 100644
--- a/docs/datasette-publish-cloudrun-help.txt
+++ b/docs/datasette-publish-cloudrun-help.txt
@@ -3,7 +3,7 @@ $ datasette publish cloudrun --help
 Usage: datasette publish cloudrun [OPTIONS] [FILES]...
 
 Options:
-  -m, --metadata FILENAME         Path to JSON file containing metadata to publish
+  -m, --metadata FILENAME         Path to JSON/YAML file containing metadata to publish
   --extra-options TEXT            Extra options to pass to datasette serve
   --branch TEXT                   Install datasette from a GitHub branch e.g. master
   --template-dir DIRECTORY        Path to directory containing custom templates
diff --git a/docs/datasette-publish-heroku-help.txt b/docs/datasette-publish-heroku-help.txt
index a633ba2e..ec157753 100644
--- a/docs/datasette-publish-heroku-help.txt
+++ b/docs/datasette-publish-heroku-help.txt
@@ -3,7 +3,7 @@ $ datasette publish heroku --help
 Usage: datasette publish heroku [OPTIONS] [FILES]...
 
 Options:
-  -m, --metadata FILENAME         Path to JSON file containing metadata to publish
+  -m, --metadata FILENAME         Path to JSON/YAML file containing metadata to publish
   --extra-options TEXT            Extra options to pass to datasette serve
   --branch TEXT                   Install datasette from a GitHub branch e.g. master
   --template-dir DIRECTORY        Path to directory containing custom templates
diff --git a/docs/datasette-serve-help.txt b/docs/datasette-serve-help.txt
index c0b33c54..5265c294 100644
--- a/docs/datasette-serve-help.txt
+++ b/docs/datasette-serve-help.txt
@@ -21,7 +21,7 @@ Options:
   --cors                    Enable CORS by serving Access-Control-Allow-Origin: *
   --load-extension PATH     Path to a SQLite extension to load
   --inspect-file TEXT       Path to JSON file created using "datasette inspect"
-  -m, --metadata FILENAME   Path to JSON file containing license/source metadata
+  -m, --metadata FILENAME   Path to JSON/YAML file containing license/source metadata
   --template-dir DIRECTORY  Path to directory containing custom templates
   --plugins-dir DIRECTORY   Path to directory containing custom plugins
   --static MOUNT:DIRECTORY  Serve static files from this directory at /MOUNT/...