diff --git a/go.mod b/go.mod
index a1ac6b1..94c812d 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@ module github.com/shoenig/bcrypt-tool
 
 go 1.19
 
-require golang.org/x/crypto v0.18.0
+require golang.org/x/crypto v0.21.0
diff --git a/go.sum b/go.sum
index 21a424e..e02e133 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,2 @@
-golang.org/x/crypto v0.12.0 h1:tFM/ta59kqch6LlvYnPa0yx5a83cL2nHflFhYKvv9Yk=
-golang.org/x/crypto v0.12.0/go.mod h1:NF0Gs7EO5K4qLn+Ylc+fih8BSTeIjAP05siRnAh98yw=
-golang.org/x/crypto v0.18.0 h1:PGVlW0xEltQnzFZ55hkuX5+KLyrMYhHld1YHO4AKcdc=
-golang.org/x/crypto v0.18.0/go.mod h1:R0j02AL6hcrfOiy9T4ZYp/rcWeMxM3L6QYxlOuEG1mg=
+golang.org/x/crypto v0.21.0 h1:X31++rzVUdKhX5sWmSOFZxx8UW/ldWx55cbf08iNAMA=
+golang.org/x/crypto v0.21.0/go.mod h1:0BP7YvVV9gBbVKyeTG0Gyn+gZm94bibOW5BjDEYAOMs=