diff --git a/dist/index.js b/dist/index.js
index f40a1d9d..e2a30f5a 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -14073,9 +14073,6 @@ function normalizeOutputKey(dataKey, isEnvVar = false) {
     .replace(".", "__")
     .replace(new RegExp("-", "g"), "")
     .replace(/[^\p{L}\p{N}_-]/gu, "");
-  if (isEnvVar) {
-    outputKey = outputKey.toUpperCase();
-  }
   return outputKey;
 }
 
diff --git a/src/utils.js b/src/utils.js
index b2fa1510..5e3d99b6 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -8,9 +8,6 @@ function normalizeOutputKey(dataKey, isEnvVar = false) {
     .replace(".", "__")
     .replace(new RegExp("-", "g"), "")
     .replace(/[^\p{L}\p{N}_-]/gu, "");
-  if (isEnvVar) {
-    outputKey = outputKey.toUpperCase();
-  }
   return outputKey;
 }