diff --git a/go.mod b/go.mod
index 7348d38..71874b7 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,6 @@ go 1.20
 require (
 	github.com/coreos/go-semver v0.3.1
 	github.com/golang/mock v1.6.0
-	github.com/transparency-dev/armored-witness-applet v0.0.0-20230918140527-29dcafed830b
 	github.com/transparency-dev/formats v0.0.0-20230920083814-0f75b1d4e813
 	github.com/transparency-dev/merkle v0.0.2
 	golang.org/x/mod v0.15.0
diff --git a/go.sum b/go.sum
index 6bd3674..337bac9 100644
--- a/go.sum
+++ b/go.sum
@@ -5,8 +5,6 @@ github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ4
 github.com/golang/mock v1.6.0 h1:ErTB+efbowRARo13NNdxyJji2egdxLGQhRaY+DUumQc=
 github.com/golang/mock v1.6.0/go.mod h1:p6yTPP+5HYm5mzsMV8JkE6ZKdX+/wYM6Hr+LicevLPs=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
-github.com/transparency-dev/armored-witness-applet v0.0.0-20230918140527-29dcafed830b h1:d8bLTgqLrvH1VJyNUTAzLyY/Ux13s7QHb19vEcTum7E=
-github.com/transparency-dev/armored-witness-applet v0.0.0-20230918140527-29dcafed830b/go.mod h1:oZIrSasyvz0k1IUaN9Ir8CDum9E/EBxyCN8zQftH1HU=
 github.com/transparency-dev/formats v0.0.0-20230920083814-0f75b1d4e813 h1:PHklaeYyhPsbhWt+MnKpBvJrsJGkPEaU1JutMj4wNqM=
 github.com/transparency-dev/formats v0.0.0-20230920083814-0f75b1d4e813/go.mod h1:J2NdDb6IhKIvF6MwCvKikz9/QStRylEtS2mv+En+jBg=
 github.com/transparency-dev/merkle v0.0.2 h1:Q9nBoQcZcgPamMkGn7ghV8XiTZ/kRxn1yCG81+twTK4=