diff --git a/zcash-issue-dag.py b/zcash-issue-dag.py
index 21a16ec1..26aa8843 100755
--- a/zcash-issue-dag.py
+++ b/zcash-issue-dag.py
@@ -30,6 +30,7 @@ CORE_REPOS = {
     133857578: ('zcash-hackworks', 'zcash-test-vectors'),
     290019239: ('zcash', 'halo2'),
     305835578: ('zcash', 'orchard'),
+    421088069: ('zcash', 'halo2_gadgets'),
 }
 
 WALLET_REPOS = {