diff --git a/ExpressAPI/src/app.ts b/ExpressAPI/src/app.ts
index 1250af3da79a7764038ae9c16bc9934e2a4a53ed..bfbc0494636c237af8dae3185fc2670eb0c51b67 100644
--- a/ExpressAPI/src/app.ts
+++ b/ExpressAPI/src/app.ts
@@ -3,10 +3,12 @@
 const path = require('node:path');
 
 if ( process.env.NODE_ENV && process.env.NODE_ENV === 'production' ) {
-    require('dotenv').config();
+    const myEnv = require('dotenv').config();
+    require('dotenv-expand').expand(myEnv);
 } else {
     require('dotenv').config({ path: path.join(__dirname, '../.env.keys') });
-    require('dotenv').config({ DOTENV_KEY: process.env.DOTENV_KEY_DEVELOPMENT });
+    const myEnv = require('dotenv').config({ DOTENV_KEY: process.env.DOTENV_KEY_DEVELOPMENT });
+    require('dotenv-expand').expand(myEnv);
 }
 
 require('./shared/helpers/TypeScriptExtensions'); // ATTENTION : This line MUST be after the dotenv.config() calls