diff --git a/src/subscriber/dune b/src/subscriber/dune
index 657c53f..30c53d6 100644
--- a/src/subscriber/dune
+++ b/src/subscriber/dune
@@ -9,5 +9,6 @@
              (select time_.ml from
                      (mtime mtime.clock.os -> time_.mtime.ml)
                      (mtime mtime.clock.jsoo -> time_.mtime.ml)
+                     (unix -> time_.unix.ml)
                      ( -> time_.dummy.ml))))
 
diff --git a/src/subscriber/time_.unix.ml b/src/subscriber/time_.unix.ml
new file mode 100644
index 0000000..b2683ff
--- /dev/null
+++ b/src/subscriber/time_.unix.ml
@@ -0,0 +1,3 @@
+let[@inline] get_time_ns () : float =
+  let t = Unix.gettimeofday () in
+  t *. 1e9