diff --git a/README.md b/README.md
index 595b050..02e7ba3 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,7 @@ This ["first come, first assign"](https://github.com/multiformats/multicodec/pul
 - [Haskell](https://github.com/multiformats/haskell-multicodec)
 - [Elixir](https://github.com/nocursor/ex-multicodec)
 - [Scala](https://github.com/fluency03/scala-multicodec)
+- [Ruby](https://github.com/sleeplessbyte/ruby-multicodec)
 - [Add yours today!](https://github.com/multiformats/multicodec/edit/master/table.csv)
 
 ## Multicodec Path, also known as [`multistream`](https://github.com/multiformats/multistream)
diff --git a/table.csv b/table.csv
index 60e8208..a46f88b 100644
--- a/table.csv
+++ b/table.csv
@@ -68,6 +68,7 @@ decred-tx,                      ipld,           0xe1,           Decred Tx
 ipld-ns,                        namespace,      0xe2,           IPLD path
 ipfs-ns,                        namespace,      0xe3,           IPFS path
 swarm-ns,                       namespace,      0xe4,           Swarm path
+ipns-ns,                        namespace,      0xe5,           IPNS path
 ed25519-pub,                    key,            0xed,           Ed25519 public key
 dash-block,                     ipld,           0xf0,           Dash Block
 dash-tx,                        ipld,           0xf1,           Dash Tx