diff --git a/Readme.md b/Readme.md
index dbd5dc8..3564c66 100644
--- a/Readme.md
+++ b/Readme.md
@@ -2,8 +2,9 @@
 
 [![Go Reference](https://pkg.go.dev/badge/github.com/bobg/merkle.svg)](https://pkg.go.dev/github.com/bobg/merkle)
 [![Go Report Card](https://goreportcard.com/badge/github.com/bobg/merkle)](https://goreportcard.com/report/github.com/bobg/merkle)
-![Tests](https://github.com/bobg/merkle/actions/workflows/go.yml/badge.svg)
+[![Tests](https://github.com/bobg/merkle/actions/workflows/go.yml/badge.svg)](https://github.com/bobg/merkle/actions/workflows/go.yml)
 [![Coverage Status](https://coveralls.io/repos/github/bobg/merkle/badge.svg?branch=master)](https://coveralls.io/github/bobg/merkle?branch=master)
+[![Mentioned in Awesome Go](https://awesome.re/mentioned-badge.svg)](https://github.com/avelino/awesome-go)
 
 This is merkle,
 a Go package for computing the Merkle root hash of a sequence of byte strings,
diff --git a/go.mod b/go.mod
index 85f3e38..05ecb04 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,7 @@ module github.com/bobg/merkle/v2
 
 go 1.14
 
-require golang.org/x/crypto v0.0.0-20181127143415-eb0de9b17e85
+require (
+	golang.org/x/crypto v0.0.0-20220507011949-2cf3adece122
+	golang.org/x/sys v0.0.0-20220503163025-988cb79eb6c6 // indirect
+)
diff --git a/go.sum b/go.sum
index 8aced37..e4bd1cc 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,13 @@
 golang.org/x/crypto v0.0.0-20181127143415-eb0de9b17e85 h1:et7+NAX3lLIk5qUCTA9QelBjGE/NkhzYw/mhnr0s7nI=
 golang.org/x/crypto v0.0.0-20181127143415-eb0de9b17e85/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/crypto v0.0.0-20220507011949-2cf3adece122 h1:NvGWuYG8dkDHFSKksI1P9faiVJ9rayE6l0+ouWVIDs8=
+golang.org/x/crypto v0.0.0-20220507011949-2cf3adece122/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220503163025-988cb79eb6c6 h1:nonptSpoQ4vQjyraW20DXPAglgQfVnM9ZC6MmNLMR60=
+golang.org/x/sys v0.0.0-20220503163025-988cb79eb6c6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=