diff --git a/dist/index.js b/dist/index.js
index fed4ebe..06f009d 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -62144,7 +62144,7 @@ function addCiRegistryAuth(ci_registry, registryAuthJson) {
 }
 
 function mergeArgRegistryAuthJson(registryAuthJson) {
-  const argRegistryAuthJson = process.env['REGISTRY_AUTH_JSON'];
+  const argRegistryAuthJson = core.getInput("registry_auth_json");
   if (argRegistryAuthJson != null && argRegistryAuthJson.trim().length > 0) {
     try {
       const argRegistryAuth = JSON.parse(argRegistryAuthJson);
diff --git a/src/lib.js b/src/lib.js
index 038f485..7a1fab3 100644
--- a/src/lib.js
+++ b/src/lib.js
@@ -40,7 +40,7 @@ export function addCiRegistryAuth(ci_registry, registryAuthJson) {
 }
 
 export function mergeArgRegistryAuthJson(registryAuthJson) {
-  const argRegistryAuthJson = process.env['REGISTRY_AUTH_JSON'];
+  const argRegistryAuthJson = core.getInput('registry_auth_json');
   if (argRegistryAuthJson != null && argRegistryAuthJson.trim().length > 0) {
     try {
       const argRegistryAuth = JSON.parse(argRegistryAuthJson);