diff --git a/data.json b/data.json
index 7a27bf8..9eefe62 100644
--- a/data.json
+++ b/data.json
@@ -114,6 +114,14 @@
         "upstream": "http://gentoo.mirrors.tera-byte.com/",
         "file": "distfiles/timestamp.dev-local"
     },
+    "GentooPortage": {
+        "out_of_date_since": null,
+        "out_of_date_interval": 86400,
+        "csc": "rsync://rsync4.ca.gentoo.org/",
+        "upstream1": "rsync://rsync1.de.gentoo.org/",
+        "upstream2": "rsync://rsync8.de.gentoo.org/",
+        "file": "gentoo-portage/Manifest"
+    },
     "GNOME": {
         "out_of_date_since": null,
         "out_of_date_interval": 86400,
diff --git a/main.py b/main.py
index ecf74de..eb462ad 100644
--- a/main.py
+++ b/main.py
@@ -5,6 +5,7 @@ This mirror status checker determines whether CSC mirror is up-to-date with upst
 """
 
 import time
+import os
 import requests
 from arch import Arch
 from ceph import Ceph
@@ -48,6 +49,27 @@ def checker(directory_URL, file_name):
     else:
         return('No dates found')
 
+def gentoo_portage_checker(data_json, distro_name):
+    """GentooPortage checker"""
+    rsync_command = "rsync -q {}{} {}"
+    os.system(rsync_command.format(data_json[distro_name]["csc"],
+                                   data_json[distro_name]["file"],
+                                   "csc_manifest"))
+    os.system(rsync_command.format(data_json[distro_name]["upstream1"],
+                                   data_json[distro_name]["file"],
+                                   "upstream_manifest1"))
+    os.system(rsync_command.format(data_json[distro_name]["upstream2"],
+                                   data_json[distro_name]["file"],
+                                   "upstream_manifest2"))
+    stream1 = os.popen("diff csc_manifest upstream_manifest1")
+    output1 = stream1.read()
+    stream2 = os.popen("diff csc_manifest upstream_manifest2")
+    output2 = stream2.read()
+    os.system("rm csc_manifest")
+    os.system("rm upstream_manifest1")
+    os.system("rm upstream_manifest2")
+    return 0 in [len(output1), len(output2)]
+
 def gnome_checker(data_json, distro_name):
     """GNOME checker"""
     csc_url = CSC_MIRROR + data_json[distro_name]["file"]
@@ -98,7 +120,9 @@ if __name__ == "__main__":
                                 print(f"Success: {distro} up-to-date")
                             break
                     continue
-                if distro == "GNOME":
+                if distro == "GentooPortage":
+                    checker_result = gentoo_portage_checker(data, distro)
+                elif distro == "GNOME":
                     gnome_text = requests.get("https://download.gnome.org/core/").text
                     line_count = len(gnome_text.split('\n'))
                     # Latest version is currently 41, which has line count of 49