diff --git a/src/projects/defi/sienna/index.yaml b/src/projects/defi/sienna/index.yaml
index 3d6599bf..8862e394 100644
--- a/src/projects/defi/sienna/index.yaml
+++ b/src/projects/defi/sienna/index.yaml
@@ -8,7 +8,7 @@ token:
     contract_address: secret1rgm2m5t530tdzyd99775n6vzumxa5luxcllml4
 description: 'Privacy-first, cross-chain decentralized finance protocol powered by Secret Network in the Cosmos ecosystem.'
 project_type: DeFi
-product_launch_day: 2022/04/27
+product_launch_day: 2022-04-27
 technology:
   type: TEE
   name: Trusted execution environment