diff --git a/.github/workflows/test_vectors.yml b/.github/workflows/test_vectors.yml
index 73d9b3e..1921f0e 100644
--- a/.github/workflows/test_vectors.yml
+++ b/.github/workflows/test_vectors.yml
@@ -17,7 +17,7 @@ jobs:
             extension: 'json'
             name: 'JSON'
           - kind: 'zcash'
-            extension: 'rs'
+            extension: 'json'
             name: 'Bitcoin-flavoured JSON'
       fail-fast: false