diff --git a/actions/gcp-gsm-parse-secrets/main.py b/actions/gcp-gsm-parse-secrets/main.py
index dda015200..81ddc060d 100644
--- a/actions/gcp-gsm-parse-secrets/main.py
+++ b/actions/gcp-gsm-parse-secrets/main.py
@@ -55,16 +55,16 @@ def main(
     # Deduplicate the input secrets
     input_secrets = set(input_secrets.splitlines())
 
-    output = ""
+    output = []
     parsed_secret_names = []
     for secret in input_secrets:
-        parsed_secret, parsed_secret_name = (
-            parse_secret(secret, gcp_project, github_output_delimter) + "\n"
+        parsed_secret, parsed_secret_name = parse_secret(
+            secret, gcp_project, github_output_delimter
         )
-        output += parsed_secret
+        output.append(parsed_secret)
         parsed_secret_names.append(parsed_secret_name)
 
-    set_github_action_output("secrets-list", output, github_output_delimter)
+    set_github_action_output("secrets-list", "\n".join(output), github_output_delimter)
     set_github_action_output(
         "secret-names", ",".join(parsed_secret_names), github_output_delimter
     )
diff --git a/actions/gcp-gsm-parse-secrets/tests.py b/actions/gcp-gsm-parse-secrets/tests.py
index 66fee5679..32ca5c52f 100644
--- a/actions/gcp-gsm-parse-secrets/tests.py
+++ b/actions/gcp-gsm-parse-secrets/tests.py
@@ -2,17 +2,36 @@
 
 from main import parse_secret
 
+
 class TestParseSecret(unittest.TestCase):
     def test_parse_secret(self):
-        self.assertEqual(parse_secret("secret_name", "project_name"), "SECRET_NAME:project_name/secret_name")
-        self.assertEqual(parse_secret("secret_name/version", "project_name"), "SECRET_NAME:project_name/secret_name/version")
-        self.assertEqual(parse_secret("123-456", "project_name"), "123_456:project_name/123-456")
-        self.assertEqual(parse_secret("123___123___123", "project_name"), "123_123_123:project_name/123___123___123")
-        self.assertEqual(parse_secret("i-like_trains__why_this?", "project_name"), "I_LIKE_TRAINS_WHY_THIS:project_name/i-like_trains__why_this?")
+        self.assertEqual(
+            parse_secret("secret_name", "project_name")[0],
+            "SECRET_NAME:project_name/secret_name",
+        )
+        self.assertEqual(
+            parse_secret("secret_name/version", "project_name")[0],
+            "SECRET_NAME:project_name/secret_name/version",
+        )
+        self.assertEqual(
+            parse_secret("123-456", "project_name")[0], "123_456:project_name/123-456"
+        )
+        self.assertEqual(
+            parse_secret("123___123___123", "project_name")[0],
+            "123_123_123:project_name/123___123___123",
+        )
+        self.assertEqual(
+            parse_secret("i-like_trains__why_this?", "project_name")[0],
+            "I_LIKE_TRAINS_WHY_THIS:project_name/i-like_trains__why_this?",
+        )
 
     def test_parse_secret_special(self):
         # FIXME: this test is failing and i dont know why
-        self.assertEqual(parse_secret("123&&123()123__123*__*_123", "project_name"), "123_123_123_123:project_name/123&&123()123__123*__*_123")
+        self.assertEqual(
+            parse_secret("123&&123()123__123*__*_123", "project_name")[0],
+            "123_123_123_123:project_name/123&&123()123__123*__*_123",
+        )
+
 
-if __name__ == '__main__':
-    unittest.main()
\ No newline at end of file
+if __name__ == "__main__":
+    unittest.main()