diff --git a/tor-versions.json b/tor-versions.json
index cc6a62ea617e5afba276a8b1cc9a2d639a2812e3..bb7c39ee378a76d5c68e52c1d5d5862d1a264448 100644
--- a/tor-versions.json
+++ b/tor-versions.json
@@ -14,11 +14,11 @@
     },
     "xz": {
       "url": "https://git.tukaani.org/xz.git",
-      "commit": "v5.2.10"
+      "commit": "v5.6.4"
     },
     "zlib": {
       "url": "https://github.com/madler/zlib.git",
-      "commit": "v1.2.12"
+      "commit": "v1.2.13"
     },
     "ndk": {
       "url": "https://dl.google.com/android/repository/android-ndk-r21e-linux-x86_64.zip",