diff --git a/mk/sm.spec.in b/mk/sm.spec.in
index 2353b13e..56875a51 100755
--- a/mk/sm.spec.in
+++ b/mk/sm.spec.in
@@ -24,7 +24,7 @@ Requires: xenserver-multipath
 Requires: python3-bitarray
 Requires: python3-future
 Conflicts: kernel < 4.19.19-5.0.0
-Conflicts: blktap < 3.55.3
+Conflicts: blktap < 4.0.0
 
 %description
 This package contains storage backends used in XCP