diff --git a/codecarbon/external/geography.py b/codecarbon/external/geography.py
index 075824959..6b211a61a 100644
--- a/codecarbon/external/geography.py
+++ b/codecarbon/external/geography.py
@@ -28,7 +28,7 @@ def extract_gcp_region(zone: str) -> str:
             """
             projects/705208488469/zones/us-central1-a -> us-central1
             """
-            google_region_regex = r"[a-z]+-[a-z]+[0-9]"
+            google_region_regex = r"[a-z]+-[a-z]+[0-9]+"
             return re.search(google_region_regex, zone).group(0)
 
         extract_region_for_provider: Dict[str, Callable] = {
diff --git a/tests/test_geography.py b/tests/test_geography.py
index 8f95f7f43..b0a61cacb 100644
--- a/tests/test_geography.py
+++ b/tests/test_geography.py
@@ -1,6 +1,7 @@
 import unittest
 from unittest import mock
 
+import pytest
 import responses
 
 from codecarbon.external.geography import CloudMetadata, GeoMetadata
@@ -15,6 +16,20 @@
 )
 
 
+@pytest.mark.parametrize(
+    "region", ["europe-west12", "europe-west10", "us-central1", "asia-northeast3"]
+)
+@pytest.mark.parametrize("prefix", ["", "projects/123/zones/"])
+def test_cloud_metadata_gcp_region_number(region, prefix):
+    metadata = {"provider": "gcp", "metadata": {"zone": f"{prefix}{region}-a"}}
+    with mock.patch(
+        "codecarbon.external.geography.get_env_cloud_details", return_value=metadata
+    ):
+        cloud = CloudMetadata.from_utils()
+    assert cloud.provider == "gcp"
+    assert cloud.region == region
+
+
 class TestCloudMetadata(unittest.TestCase):
     @mock.patch(
         "codecarbon.external.geography.get_env_cloud_details",