diff --git a/go.mod b/go.mod
index 97e96f53..af1ac2a0 100644
--- a/go.mod
+++ b/go.mod
@@ -1,10 +1,9 @@
 module filippo.io/age
 
-go 1.21.0
+go 1.21
 
 require (
 	filippo.io/edwards25519 v1.0.0
-	github.com/google/go-cmp v0.5.9
 	golang.org/x/crypto v0.4.0
 	golang.org/x/sys v0.11.0
 	golang.org/x/term v0.3.0
diff --git a/go.sum b/go.sum
index b46afcfe..a71308ce 100644
--- a/go.sum
+++ b/go.sum
@@ -4,8 +4,6 @@ filippo.io/edwards25519 v1.0.0 h1:0wAIcmJUqRdI8IJ/3eGi5/HwXZWPujYXXlkrQogz0Ek=
 filippo.io/edwards25519 v1.0.0/go.mod h1:N1IkdkCkiLB6tki+MYJoSx2JTY9NUlxZE7eHn5EwJns=
 github.com/FiloSottile/go-internal v1.8.2-0.20230806172430-94b0f0dc0b1e h1:1pkMKBSmMMOXQT5lFTmciWn86GGymBssr1bOOOoo2GI=
 github.com/FiloSottile/go-internal v1.8.2-0.20230806172430-94b0f0dc0b1e/go.mod h1:ddIwULY96R17DhadqLgMfk9H9tvdUzkipdSkR5nkCZA=
-github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
-github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 golang.org/x/crypto v0.4.0 h1:UVQgzMY87xqpKNgb+kDsll2Igd33HszWHFLmpaRMq/8=
 golang.org/x/crypto v0.4.0/go.mod h1:3quD/ATkf6oY+rnes5c3ExXTbLc8mueNue5/DoinL80=
 golang.org/x/sys v0.11.0 h1:eG7RXZHdqOJ1i+0lgLgCpSXAp6M3LYlAo6osgSi0xOM=