diff --git a/data/ecosystems/z/zero-knowledge-cryptography.toml b/data/ecosystems/z/zero-knowledge-cryptography.toml
index 208f129e..8fb891ba 100644
--- a/data/ecosystems/z/zero-knowledge-cryptography.toml
+++ b/data/ecosystems/z/zero-knowledge-cryptography.toml
@@ -363,6 +363,9 @@ url = "https://github.com/zeropoolnetwork/near-sdk-rs"
 [[repo]]
 url = "https://github.com/zeropoolnetwork/nearcore"
 
+[[repo]]
+url = "https://github.com/zeropoolnetwork/nep21-playground"
+
 [[repo]]
 url = "https://github.com/zeropoolnetwork/phase2-bn254"