diff --git a/apps/paywall/vite.config.ts b/apps/paywall/vite.config.ts
index a020d329..679f35c0 100644
--- a/apps/paywall/vite.config.ts
+++ b/apps/paywall/vite.config.ts
@@ -30,6 +30,8 @@ const envVars = {
   WALLET_CONNECT_PROJECT_ID: undefined,
   MONTHLY_PRO_PLAN_CHECKOUT_LINK: undefined,
   YEARLY_PRO_PLAN_CHECKOUT_LINK: undefined,
+  LINK_API_URL: 'https://www.walletlink.org',
+  SDK_VERSION: 'unknown',
 };
 
 const dirname = __dirname;
diff --git a/apps/shop/vite.config.ts b/apps/shop/vite.config.ts
index a5cfc1aa..47a92c2c 100644
--- a/apps/shop/vite.config.ts
+++ b/apps/shop/vite.config.ts
@@ -34,6 +34,7 @@ const envVars = {
   MONTHLY_PRO_PLAN_CHECKOUT_LINK: undefined,
   YEARLY_PRO_PLAN_CHECKOUT_LINK: undefined,
   LINK_API_URL: 'https://www.walletlink.org',
+  SDK_VERSION: 'unknown',
 };
 
 const dirname = __dirname;