diff --git a/imdclient/tests/test_manual.py b/imdclient/tests/test_manual.py
index e6d52cf..df0403f 100644
--- a/imdclient/tests/test_manual.py
+++ b/imdclient/tests/test_manual.py
@@ -8,7 +8,7 @@
 import numpy as np
 from .base import assert_allclose_with_logging
 from pathlib import Path
-
+import time
 import logging
 
 logger = logging.getLogger("imdclient.IMDClient")
@@ -66,6 +66,8 @@ def imd_u(self, topol_path_arg, tmp_path):
             f"{tmp_path.as_posix()}/imd_test_traj.trr",
             atom_style="id type x y z",
         )
+        # Give all MPI ranks a chance to release FD on traj
+        time.sleep(10)
         yield imd_u
 
     def test_compare_imd_to_true_traj(self, true_u, imd_u, first_frame_arg):