diff --git a/WORKSPACE b/WORKSPACE
index 6359814..2602053 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -190,17 +190,17 @@
 # corresponding version
 maven_jar(
     name = "commons-compress",
-    artifact = "org.apache.commons:commons-compress:1.18",
-    sha1 = "1191f9f2bc0c47a8cce69193feb1ff0a8bcb37d5",
+    artifact = "org.apache.commons:commons-compress:1.21",
+    sha1 = "4ec95b60d4e86b5c95a0e919cb172a0af98011ef",
 )
 
 # Transitive dependency of commons_compress. Should only be
 # upgraded at the same time as commons_compress.
 maven_jar(
     name = "tukaani-xz",
-    artifact = "org.tukaani:xz:1.8",
+    artifact = "org.tukaani:xz:1.9",
     attach_source = False,
-    sha1 = "c4f7d054303948eb6a4066194253886c8af07128",
+    sha1 = "1ea4bec1a921180164852c65006d928617bd2caf",
 )
 
 maven_jar(