diff --git a/Tests/oss-fuzz/python.supp b/Tests/oss-fuzz/python.supp
index 1ea2a8eb5..4803497ad 100644
--- a/Tests/oss-fuzz/python.supp
+++ b/Tests/oss-fuzz/python.supp
@@ -18,7 +18,7 @@
 {
    <python_alloc_possible_leak>
    Memcheck:Leak
-   match-leak-kinds: possible
+   match-leak-kinds: all
    fun:malloc
    fun:_PyMem_RawMalloc
    fun:PyObject_Malloc
@@ -28,7 +28,7 @@
 {
    <python_realloc_possible_leak>
    Memcheck:Leak
-   match-leak-kinds: possible
+   match-leak-kinds: all
    fun:malloc
    fun:_PyMem_RawRealloc
    fun:PyMem_Realloc