diff --git a/README.md b/README.md
index a3bca9d..d1672ce 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ Utilities:
  * [x] `sha224sum`
  * [x] `sha256sum`
  * [x] `sha384sum`
- * [ ] `sha512-224sum`
+ * [x] `sha512-224sum`
  * [ ] `sha512-256sum`
  * [x] `sha512sum`
  * [ ] `sleep`
diff --git a/hashsum.go b/hashsum.go
index ad40577..7ae2dc0 100644
--- a/hashsum.go
+++ b/hashsum.go
@@ -22,6 +22,7 @@ var SHA224Regex = regexp.MustCompile("^(?P<hash>[0-9a-f]{56})  (?P<filename>.*)$
 var SHA256Regex = regexp.MustCompile("^(?P<hash>[0-9a-f]{64})  (?P<filename>.*)$")
 var SHA384Regex = regexp.MustCompile("^(?P<hash>[0-9a-f]{96})  (?P<filename>.*)$")
 var SHA512Regex = regexp.MustCompile("^(?P<hash>[0-9a-f]{128})  (?P<filename>.*)$")
+var SHA512_224Regex = SHA224Regex
 
 // SumFunc is a type of function that computes a hash.Hash for data in io.Reader
 type SumFunc func(io.Reader) (hash.Hash, error)
@@ -57,6 +58,10 @@ func SHA512Sum(r io.Reader) (hash.Hash, error) {
 	return copyIntoHash(r, sha512.New())
 }
 
+func SHA512_224Sum(r io.Reader) (hash.Hash, error) {
+	return copyIntoHash(r, sha512.New512_224())
+}
+
 type CheckingResults struct {
 	ImproperlyFormattedCount uint
 	InvalidChecksumCount     uint
diff --git a/sha512-224sum/sha512-224sum.go b/sha512-224sum/sha512-224sum.go
new file mode 100644
index 0000000..b62e187
--- /dev/null
+++ b/sha512-224sum/sha512-224sum.go
@@ -0,0 +1,9 @@
+package main
+
+import (
+	common "source.heropunch.io/tomo/go-coreutils"
+)
+
+func main() {
+	common.SumMain(common.SHA512_224Regex, common.SHA512_224Sum)
+}