diff --git a/go.mod b/go.mod
index a5087575cb3047700231967466318a3d112cd3f4..213295fae9e55486e7afcc114e600fbea38a2d39 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module git.autistici.org/ai3/tools/replds2
 go 1.19
 
 require (
-	github.com/DataDog/zstd v1.5.5
+	github.com/DataDog/zstd v1.5.7
 	github.com/armon/go-radix v1.0.0
 	github.com/golang/protobuf v1.5.3
 	github.com/google/go-cmp v0.6.0
diff --git a/go.sum b/go.sum
index eded359b35ed3c301d946235163122fd4091b2fa..ab44656373d6b747f78461917ecf99cc6c3d9e22 100644
--- a/go.sum
+++ b/go.sum
@@ -40,6 +40,8 @@ github.com/DataDog/zstd v1.5.3-0.20220606203749-fd035e54e312 h1:MB4OhDISHzUx+9VI
 github.com/DataDog/zstd v1.5.3-0.20220606203749-fd035e54e312/go.mod h1:g4AWEaM3yOg3HYfnJ3YIawPnVdXJh9QME85blwSAmyw=
 github.com/DataDog/zstd v1.5.5 h1:oWf5W7GtOLgp6bciQYDmhHHjdhYkALu6S/5Ni9ZgSvQ=
 github.com/DataDog/zstd v1.5.5/go.mod h1:g4AWEaM3yOg3HYfnJ3YIawPnVdXJh9QME85blwSAmyw=
+github.com/DataDog/zstd v1.5.7 h1:ybO8RBeh29qrxIhCA9E8gKY6xfONU9T6G6aP9DTKfLE=
+github.com/DataDog/zstd v1.5.7/go.mod h1:g4AWEaM3yOg3HYfnJ3YIawPnVdXJh9QME85blwSAmyw=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=