diff --git a/action.yml b/action.yml
index 166606e..966e69c 100644
--- a/action.yml
+++ b/action.yml
@@ -80,5 +80,5 @@ outputs:
   is_pre_release:
     description: 'Output of is_package_json_version_upgraded, true|false'
 runs:
-  using: 'node21'
+  using: 'node20'
   main: 'dist/index.js'
\ No newline at end of file
diff --git a/src/bin/generateActionYml.ts b/src/bin/generateActionYml.ts
index 9893945..bdeb730 100644
--- a/src/bin/generateActionYml.ts
+++ b/src/bin/generateActionYml.ts
@@ -27,7 +27,7 @@ fs.writeFileSync(
             `    description: '${getOutputDescription(outputName).replace(/'/g,"''")}'`
         ].join("\n")),
         `runs:`,
-        `  using: 'node21'`,
+        `  using: 'node20'`,
         `  main: 'dist/index.js'`
     ].join("\n"), "utf8")
 );