diff --git a/core/xz/checksums b/core/xz/checksums
index 9f98748c..72720fda 100644
--- a/core/xz/checksums
+++ b/core/xz/checksums
@@ -1 +1 @@
-4902b0ed060f94ab80bad75e2508299379b8a3e6a27771697312d9837d082827cb
+28069564f9dd08553e07cb78197d74e27ee6d623915cd9f60744a6434d32682d0b
diff --git a/core/xz/sources b/core/xz/sources
index 3cc41d14..bbdc73c3 100644
--- a/core/xz/sources
+++ b/core/xz/sources
@@ -1 +1 @@
-https://tukaani.org/xz/xz-5.4.4.tar.gz
+https://tukaani.org/xz/xz-5.4.5.tar.gz
diff --git a/core/xz/version b/core/xz/version
index c1be1270..5e51b8ba 100644
--- a/core/xz/version
+++ b/core/xz/version
@@ -1 +1 @@
-5.4.4 1
+5.4.5 1