diff --git a/go.mod b/go.mod
index 78d20fa805a..54651e14f37 100644
--- a/go.mod
+++ b/go.mod
@@ -21,7 +21,6 @@ require (
 	github.com/libp2p/go-buffer-pool v0.0.2
 	github.com/minio/highwayhash v1.0.1
 	github.com/oasisprotocol/curve25519-voi v0.0.0-20211219162838-e9a669f65da9
-	github.com/oasisprotocol/ed25519 v0.0.0-20210127160119-f7017427c1ea
 	github.com/oasisprotocol/safeopen v0.0.0-20200528085122-e01cfdfc7661
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.8.0
diff --git a/go.sum b/go.sum
index a397449a073..382e1350faf 100644
--- a/go.sum
+++ b/go.sum
@@ -340,7 +340,6 @@ github.com/nxadm/tail v1.4.4 h1:DQuhQpB1tVlglWS2hLQ5OV6B5r8aGxSrPc5Qo6uTN78=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
 github.com/oasisprotocol/curve25519-voi v0.0.0-20211219162838-e9a669f65da9 h1:7PEzI9zayQvzHKpF2HRGlLnhs6RFNnbMAnolyyVevug=
 github.com/oasisprotocol/curve25519-voi v0.0.0-20211219162838-e9a669f65da9/go.mod h1:WUcXjUd98qaCVFb6j8Xc87MsKeMCXDu9Nk8JRJ9SeC8=
-github.com/oasisprotocol/ed25519 v0.0.0-20210127160119-f7017427c1ea/go.mod h1:IZbb50w3AB72BVobEF6qG93NNSrTw/V2QlboxqSu3Xw=
 github.com/oasisprotocol/safeopen v0.0.0-20200528085122-e01cfdfc7661 h1:MB73kGMtuMGS+6VDoU/mitzff7Cu+aZo9ta5wabuxVA=
 github.com/oasisprotocol/safeopen v0.0.0-20200528085122-e01cfdfc7661/go.mod h1:SwBxaVibf6Sr2IZ6M3WnUue0yp8dPLAo1riQRNQ60+g=
 github.com/oklog/oklog v0.3.2/go.mod h1:FCV+B7mhrz4o+ueLpx+KqkyXRGMWOYEvfiXtdGtbWGs=