diff --git a/src/projects/defi/sienna/index.yaml b/src/projects/defi/sienna/index.yaml
index dc990313..b1a6fa1d 100644
--- a/src/projects/defi/sienna/index.yaml
+++ b/src/projects/defi/sienna/index.yaml
@@ -6,7 +6,7 @@ token:
     symbol: SIENNA
 description: 'Privacy-first, cross-chain decentralized finance protocol powered by Secret Network in the Cosmos ecosystem.'
 project_type: DeFi
-product_launch_day: April 27, 2022
+product_launch_day: 2022/04/27
 technology:
   type: TEE
   name: Trusted execution environment