diff --git a/go.mod b/go.mod
index e645976c..2e451c83 100644
--- a/go.mod
+++ b/go.mod
@@ -8,7 +8,7 @@ require (
 	github.com/prometheus/client_golang v1.10.0
 	github.com/prometheus/common v0.20.0 // indirect
 	github.com/sirupsen/logrus v1.8.1
-	github.com/zmap/zcrypto v0.0.0-20210920131930-11cb43ac62dd
+	github.com/zmap/zcrypto v0.0.0-20211215002636-794a43ce1b16
 	github.com/zmap/zflags v1.4.0-beta.1.0.20200204220219-9d95409821b6
 	golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2
 	golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4
diff --git a/go.sum b/go.sum
index d0887d8c..9d54bb7a 100644
--- a/go.sum
+++ b/go.sum
@@ -281,6 +281,8 @@ github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q
 github.com/zmap/zcertificate v0.0.0-20180516150559-0e3d58b1bac4/go.mod h1:5iU54tB79AMBcySS0R2XIyZBAVmeHranShAFELYx7is=
 github.com/zmap/zcrypto v0.0.0-20210920131930-11cb43ac62dd h1:hl3GmSA4k1N8E2kPvUY2eqdQWvxCL0OP/kVXL7X+M/M=
 github.com/zmap/zcrypto v0.0.0-20210920131930-11cb43ac62dd/go.mod h1:64KeCzxyjA/pxA8ek5WQdJTLV/aF7hZScXz+blZ5QQE=
+github.com/zmap/zcrypto v0.0.0-20211215002636-794a43ce1b16 h1:MaApWRJ2cb+y39In6PqS7C1nCrDkej/wvWnvZxnz2T4=
+github.com/zmap/zcrypto v0.0.0-20211215002636-794a43ce1b16/go.mod h1:64KeCzxyjA/pxA8ek5WQdJTLV/aF7hZScXz+blZ5QQE=
 github.com/zmap/zflags v1.4.0-beta.1.0.20200204220219-9d95409821b6 h1:XYA+NN2AS4mRmIDVu2nCtrjU17zKlRihO3MnlcmueUw=
 github.com/zmap/zflags v1.4.0-beta.1.0.20200204220219-9d95409821b6/go.mod h1:HXDUD+uue8yeLHr0eXx1lvY6CvMiHbTKw5nGmA9OUoo=
 go.etcd.io/bbolt v1.3.3/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=