diff --git a/tests/queries/0_stateless/01072_window_view_multiple_columns_groupby.sh b/tests/queries/0_stateless/01072_window_view_multiple_columns_groupby.sh
index 1b66beffe7e..062ecf648a7 100755
--- a/tests/queries/0_stateless/01072_window_view_multiple_columns_groupby.sh
+++ b/tests/queries/0_stateless/01072_window_view_multiple_columns_groupby.sh
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
-# Tags: no-random-settings, no-fasttest
+# Tags: no-random-settings, no-fasttest, no-parallel
+# For unknown reason this test is flaky without no-parallel
 
 CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
 # shellcheck source=../shell_config.sh