diff --git a/README.md b/README.md
index f4e6795..feb762e 100644
--- a/README.md
+++ b/README.md
@@ -70,7 +70,7 @@ Utilities:
  * [x] `sha1sum`
  * [x] `sha224sum`
  * [x] `sha256sum`
- * [ ] `sha384sum`
+ * [x] `sha384sum`
  * [ ] `sha512-224sum`
  * [ ] `sha512-256sum`
  * [ ] `sha512sum`
diff --git a/hashsum.go b/hashsum.go
index 1df396f..8127ca0 100644
--- a/hashsum.go
+++ b/hashsum.go
@@ -5,6 +5,7 @@ import (
 	"crypto/md5"
 	"crypto/sha1"
 	"crypto/sha256"
+	"crypto/sha512"
 	"errors"
 	"fmt"
 	"hash"
@@ -19,6 +20,7 @@ var MD5Regex = regexp.MustCompile("^(?P<hash>[0-9a-f]{32})  (?P<filename>.*)$")
 var SHA1Regex = regexp.MustCompile("^(?P<hash>[0-9a-f]{40})  (?P<filename>.*)$")
 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>.*)$")
 
 // SumFunc is a type of function that computes a hash.Hash for data in io.Reader
 type SumFunc func(io.Reader) (hash.Hash, error)
@@ -46,6 +48,10 @@ func SHA256Sum(r io.Reader) (hash.Hash, error) {
 	return copyIntoHash(r, sha256.New())
 }
 
+func SHA384Sum(r io.Reader) (hash.Hash, error) {
+	return copyIntoHash(r, sha512.New384())
+}
+
 type CheckingResults struct {
 	ImproperlyFormattedCount uint
 	InvalidChecksumCount     uint
diff --git a/sha384sum/sha384sum.go b/sha384sum/sha384sum.go
new file mode 100644
index 0000000..228fb16
--- /dev/null
+++ b/sha384sum/sha384sum.go
@@ -0,0 +1,9 @@
+package main
+
+import (
+	common "source.heropunch.io/tomo/go-coreutils"
+)
+
+func main() {
+	common.SumMain(common.SHA384Regex, common.SHA384Sum)
+}