diff --git a/README.md b/README.md
index 4766ac6d..878879a3 100644
--- a/README.md
+++ b/README.md
@@ -304,6 +304,7 @@ Here are the Go packages that can be imported correctly:
 * [hash/adler32](https://pkg.go.dev/hash/adler32)
 * [hash/crc32](https://pkg.go.dev/hash/crc32) (partially)
 * [hash/crc64](https://pkg.go.dev/hash/crc64)
+* [crypto](https://pkg.go.dev/crypto)
 * [crypto/md5](https://pkg.go.dev/crypto/md5)
 * [crypto/sha1](https://pkg.go.dev/crypto/sha1)
 * [crypto/sha256](https://pkg.go.dev/crypto/sha256)
diff --git a/_cmptest/md5demo/md5.go b/_cmptest/md5demo/md5.go
index dbee9e66..ebe57948 100644
--- a/_cmptest/md5demo/md5.go
+++ b/_cmptest/md5demo/md5.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"crypto"
 	"crypto/md5"
 	"fmt"
 	"io"
@@ -10,5 +11,10 @@ func main() {
 	h := md5.New()
 	io.WriteString(h, "The fog is getting thicker!")
 	io.WriteString(h, "And Leon's getting laaarger!")
-	fmt.Printf("%x", h.Sum(nil))
+	fmt.Printf("%x\n", h.Sum(nil))
+
+	h = crypto.MD5.New()
+	io.WriteString(h, "The fog is getting thicker!")
+	io.WriteString(h, "And Leon's getting laaarger!")
+	fmt.Printf("%x\n", h.Sum(nil))
 }