diff --git a/neuro-cli/src/neuro_cli/main.py b/neuro-cli/src/neuro_cli/main.py
index 3ba815ec3..ba37a7b8d 100644
--- a/neuro-cli/src/neuro_cli/main.py
+++ b/neuro-cli/src/neuro_cli/main.py
@@ -591,7 +591,7 @@ def main(args: Optional[List[str]] = None) -> None:
         log.exception(f"Application error ({_err_to_str(error)})")
         sys.exit(EX_SOFTWARE)
 
-    except neuro_sdk.ServerNotAvailable as error:
+    except neuro_sdk.BadGateway as error:
         log.exception(f"Application error ({_err_to_str(error)})")
         sys.exit(EX_PLATFORMERROR)
 
diff --git a/neuro-sdk/src/neuro_sdk/__init__.py b/neuro-sdk/src/neuro_sdk/__init__.py
index 4aa232a56..ae0cf100e 100644
--- a/neuro-sdk/src/neuro_sdk/__init__.py
+++ b/neuro-sdk/src/neuro_sdk/__init__.py
@@ -102,6 +102,7 @@
     AuthenticationError,
     AuthError,
     AuthorizationError,
+    BadGateway,
     ClientError,
     ConfigError,
     IllegalArgumentError,
@@ -165,6 +166,7 @@
     "AuthError",
     "AuthenticationError",
     "AuthorizationError",
+    "BadGateway",
     "BlobCommonPrefix",
     "BlobObject",
     "Bucket",
diff --git a/neuro-sdk/src/neuro_sdk/_core.py b/neuro-sdk/src/neuro_sdk/_core.py
index 779bd5520..c16364cf2 100644
--- a/neuro-sdk/src/neuro_sdk/_core.py
+++ b/neuro-sdk/src/neuro_sdk/_core.py
@@ -27,6 +27,7 @@
 from ._errors import (
     AuthenticationError,
     AuthorizationError,
+    BadGateway,
     ClientError,
     IllegalArgumentError,
     ResourceNotFound,
@@ -77,7 +78,8 @@ def __init__(
             403: AuthorizationError,
             404: ResourceNotFound,
             405: ClientError,
-            502: ServerNotAvailable,
+            502: BadGateway,
+            503: ServerNotAvailable,
         }
         self._prev_cookie: Optional[Morsel[str]] = None
 
diff --git a/neuro-sdk/src/neuro_sdk/_errors.py b/neuro-sdk/src/neuro_sdk/_errors.py
index 514b0827a..4675ed3d8 100644
--- a/neuro-sdk/src/neuro_sdk/_errors.py
+++ b/neuro-sdk/src/neuro_sdk/_errors.py
@@ -41,6 +41,11 @@ class ServerNotAvailable(ValueError):
     pass
 
 
+@rewrite_module
+class BadGateway(ValueError):
+    pass
+
+
 @rewrite_module
 class ConfigLoadException(Exception):
     pass
diff --git a/neuro-sdk/tests/test_core.py b/neuro-sdk/tests/test_core.py
index 3517a08d8..2d3d31d39 100644
--- a/neuro-sdk/tests/test_core.py
+++ b/neuro-sdk/tests/test_core.py
@@ -10,7 +10,7 @@
 from aiohttp import web
 from yarl import URL
 
-from neuro_sdk import IllegalArgumentError, ServerNotAvailable
+from neuro_sdk import BadGateway, IllegalArgumentError
 from neuro_sdk._core import (
     _Core,
     _ensure_schema,
@@ -125,7 +125,7 @@ async def handler(request: web.Request) -> web.Response:
 
     async with api_factory(srv.make_url("/")) as api:
         url = srv.make_url("test")
-        with pytest.raises(ServerNotAvailable, match="^502: Bad Gateway$"):
+        with pytest.raises(BadGateway, match="^502: Bad Gateway$"):
             async with api.request(method="GET", url=url, auth="auth") as resp:
                 assert resp.status == 200