diff --git a/lib/node_modules/@stdlib/_tools/github/dispatch-workflow/lib/query.js b/lib/node_modules/@stdlib/_tools/github/dispatch-workflow/lib/query.js
index e59357b6b992..46e944f63db6 100644
--- a/lib/node_modules/@stdlib/_tools/github/dispatch-workflow/lib/query.js
+++ b/lib/node_modules/@stdlib/_tools/github/dispatch-workflow/lib/query.js
@@ -83,7 +83,21 @@ function query( slug, id, options, clbk ) {
 		info = ratelimit( response.headers );
 		debug( 'Rate limit: %d', info.limit );
 		debug( 'Rate limit remaining: %d', info.remaining );
-		debug( 'Rate limit reset: %s', (new Date( info.reset*1000 )).toISOString() );
+
+		var resetDate;
+		var time;
+
+		if ( typeof info.reset === 'number' ) {
+			resetDate = new Date( info.reset * 1000 );
+			time = resetDate.getTime();
+
+			debug(
+				'Rate limit reset: %s',
+				( isNaN( time ) ? 'invalid timestamp' : resetDate.toISOString() )
+			);
+		} else {
+			debug( 'Rate limit reset: not provided' );
+		}
 
 		if ( error ) {
 			return clbk( error, info );