diff --git a/go.mod b/go.mod
index a7b083b3647fb20f1cabbb211dac5925bced2577..78f255b6ed5840f9a51126ebe8bd4ac7da07d73e 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module git.autistici.org/ai3/tools/replds2
 go 1.15
 
 require (
-	github.com/DataDog/zstd v1.5.3-0.20220606203749-fd035e54e312
+	github.com/DataDog/zstd v1.5.5
 	github.com/armon/go-radix v1.0.0
 	github.com/golang/protobuf v1.5.3
 	github.com/google/go-cmp v0.5.9
diff --git a/go.sum b/go.sum
index 023b69221cd6853fffa52b0671168c2760286719..51bf6dead0b04af9d82ae1768597e2670d2afeb7 100644
--- a/go.sum
+++ b/go.sum
@@ -391,6 +391,8 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/DataDog/zstd v1.5.3-0.20220606203749-fd035e54e312 h1:MB4OhDISHzUx+9VIhkCinijzgGAsyrFqko4PjPjJmbw=
 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/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 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=