--- a/mod_prometheus/mod_prometheus.lua	Fri Jan 30 15:04:22 2026 +0100
+++ b/mod_prometheus/mod_prometheus.lua	Fri Jan 30 15:04:25 2026 +0100
@@ -11,7 +11,7 @@
 local tostring = tostring;
 local t_insert = table.insert;
 local t_concat = table.concat;
-local socket = require "socket";
+local time_now = require "prosody.util.time".now;
 local statsman = require "core.statsmanager";
 local get_stats = statsman.get_stats;
 local get_metric_registry = statsman.get_metric_registry;
@@ -26,8 +26,8 @@
 end
 
 local function get_timestamp()
-	-- Using LuaSocket for that because os.time() only has second precision.
-	return math.floor(socket.gettime() * 1000);
+	-- In milliseconds.
+	return math.floor(time_now() * 1000);
 end
 
 local function repr_help(metric, docstring)