diff --git a/tools/ci/amd64/gcc/valgrind.supp b/tools/ci/amd64/gcc/valgrind.supp
index 0203858..2ad2bb9 100644
--- a/tools/ci/amd64/gcc/valgrind.supp
+++ b/tools/ci/amd64/gcc/valgrind.supp
@@ -1,3 +1,8 @@
+{
+    ignore_xflush
+    Memcheck:*
+    fun:XFlush*
+}
 {
    <insert_a_suppression_name_here>
    Memcheck:Param