diff --git a/core/xz/checksums b/core/xz/checksums
index 652cadba..b26b63e5 100644
--- a/core/xz/checksums
+++ b/core/xz/checksums
@@ -1 +1 @@
-98a09a24c391969ab822cefe8401961a3dbe573ef47bdd4b2d333d2a1074c623a7
+dd7da782d0d2f4773e7dbfdee5cbec92ed90ea18d1ab74c2db73492e408b13cca1
diff --git a/core/xz/sources b/core/xz/sources
index 02df11ee..70c32755 100644
--- a/core/xz/sources
+++ b/core/xz/sources
@@ -1 +1 @@
-https://tukaani.org/xz/xz-5.4.1.tar.gz
+https://tukaani.org/xz/xz-5.4.2.tar.gz
diff --git a/core/xz/version b/core/xz/version
index 701e1de6..84efc7ec 100644
--- a/core/xz/version
+++ b/core/xz/version
@@ -1 +1 @@
-5.4.1 1
+5.4.2 1