diff --git a/src/spikeinterface/sorters/external/mountainsort5.py b/src/spikeinterface/sorters/external/mountainsort5.py
index a88c59d688..04a4061e68 100644
--- a/src/spikeinterface/sorters/external/mountainsort5.py
+++ b/src/spikeinterface/sorters/external/mountainsort5.py
@@ -80,16 +80,15 @@ class Mountainsort5Sorter(BaseSorter):
     def is_installed(cls):
         try:
             import mountainsort5
-
             HAVE_MS5 = True
         except ImportError:
             HAVE_MS5 = False
 
         if HAVE_MS5:
             vv = parse(mountainsort5.__version__)
-            if vv < parse("0.3") or vv >= parse("0.4"):
+            if vv < parse("0.3"):
                 print(
-                    f"WARNING: This version of SpikeInterface expects Mountainsort5 version 0.3.x. "
+                    f"WARNING: This version of SpikeInterface expects Mountainsort5 version 0.3.x or newer. "
                     f"You have version {mountainsort5.__version__}"
                 )
                 HAVE_MS5 = False