diff --git a/core/xz/checksums b/core/xz/checksums
index b26b63e5..583785bd 100644
--- a/core/xz/checksums
+++ b/core/xz/checksums
@@ -1 +1 @@
-dd7da782d0d2f4773e7dbfdee5cbec92ed90ea18d1ab74c2db73492e408b13cca1
+24d45c2a63dc32789681095e1dcde06cf82481ad4154d20ed79aa5ddf9ca41e5b3
diff --git a/core/xz/sources b/core/xz/sources
index 70c32755..a607a704 100644
--- a/core/xz/sources
+++ b/core/xz/sources
@@ -1 +1 @@
-https://tukaani.org/xz/xz-5.4.2.tar.gz
+https://tukaani.org/xz/xz-5.4.3.tar.gz
diff --git a/core/xz/version b/core/xz/version
index 84efc7ec..12425e2e 100644
--- a/core/xz/version
+++ b/core/xz/version
@@ -1 +1 @@
-5.4.2 1
+5.4.3 1