diff --git a/README.md b/README.md
index b96c79d..b7464dd 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,11 @@ The optional object `opts` can have the following properties:
  * `all`: Show all fields in full, even if they include unprintable characters or are very long. (cf. man journalctl, option '-a')
  * `lines`: Show the most recent journal events and limit the number of events shown (cf. man journalctl, option '-n')
  * `since`: Start showing entries on or newer than the specified date (cf. man journalctl, option '-S')
+ * `until`: Stop showing entries on or older than the specified date (cf. man journalctl, option '-U')
+ * `utc`: Print timestamps in Coordinated Universal Time (UTC) (cf. man journalctl, option '--utc')
+ * `output`: Specify the output format (cf. man journalctl, option '-o')
+  * Supported formats: 'json', 'json-pretty', 'short', 'short-iso', 'short-monotonic', 'verbose', 'export', 'json-sse'
+
 
 ### Event: 'event'
 
diff --git a/journalctl.js b/journalctl.js
index d4d375e..b5d8c11 100644
--- a/journalctl.js
+++ b/journalctl.js
@@ -3,6 +3,8 @@ const EventEmitter = require('events');
 const util = require('util');
 const JSONStream = require('./json-stream.js');
 
+const supportedOutputFormats = ['json', 'json-pretty', 'short', 'short-iso', 'short-monotonic', 'verbose', 'export', 'json-sse'];
+
 function Journalctl (opts) {
 	EventEmitter.call(this);
 
@@ -12,8 +14,12 @@ function Journalctl (opts) {
 	if (opts.all) args.push('-a');
 	if (opts.lines) args.push('-n', opts.lines);
 	if (opts.since) args.push('-S', opts.since);
+	if (opts.until) args.push('-U', opts.until);
+	if (opts.reverse) args.push('-r');
+	if (opts.utc) args.push('--utc');
 	if (opts.identifier) args.push('-t', opts.identifier);
 	if (opts.unit) args.push('-u', opts.unit);
+	if (opts.output && supportedOutputFormats.includes(opts.output)) args.push('-o', opts.output);
 	if (opts.filter) {
 		if (!(opts.filter instanceof Array)) opts.filter = [opts.filter];
 		opts.filter.forEach((f) => args.push(f));