diff --git a/pyiceberg/catalog/rest/auth.py b/pyiceberg/catalog/rest/auth.py
index 48e49f08da..7f56f6300b 100644
--- a/pyiceberg/catalog/rest/auth.py
+++ b/pyiceberg/catalog/rest/auth.py
@@ -95,7 +95,7 @@ def __init__(
 
     def _fetch_access_token(self, credential: str) -> str:
         if COLON in credential:
-            client_id, client_secret = credential.split(COLON)
+            client_id, client_secret = credential.split(COLON, maxsplit=1)
         else:
             client_id, client_secret = None, credential
 
diff --git a/tests/catalog/test_rest.py b/tests/catalog/test_rest.py
index fb0e2607c9..d2ecd02aba 100644
--- a/tests/catalog/test_rest.py
+++ b/tests/catalog/test_rest.py
@@ -50,7 +50,7 @@
 from pyiceberg.utils.config import Config
 
 TEST_URI = "https://iceberg-test-catalog/"
-TEST_CREDENTIALS = "client:secret"
+TEST_CREDENTIALS = "client:secret_with:colon"
 TEST_OAUTH2_SERVER_URI = "https://auth-endpoint/"
 TEST_TOKEN = "some_jwt_token"
 TEST_SCOPE = "openid_offline_corpds_ds_profile"