diff --git a/deploy/production/lithium/compose.yaml b/deploy/production/lithium/compose.yaml
index 93239b9..80504ff 100644
--- a/deploy/production/lithium/compose.yaml
+++ b/deploy/production/lithium/compose.yaml
@@ -2,7 +2,7 @@ name: archive-control-archive
 
 services:
   archive-client:
-    image: sodium/archive-clients:v0.1.0
+    image: sodium/archive-clients:v0.1.1
     user: "1000:1000"
     restart: unless-stopped
     command: ["--config", "/etc/archive-control/client.toml"]
diff --git a/deploy/production/x1/compose.yaml b/deploy/production/x1/compose.yaml
index 6ca27c3..e81d3e4 100644
--- a/deploy/production/x1/compose.yaml
+++ b/deploy/production/x1/compose.yaml
@@ -2,7 +2,7 @@ name: archive-control-cache
 
 services:
   archive-client:
-    image: sodium/archive-clients:v0.1.0
+    image: sodium/archive-clients:v0.1.1
     user: "1001:1001"
     restart: unless-stopped
     network_mode: host
diff --git a/deploy/production/x2/compose.yaml b/deploy/production/x2/compose.yaml
index 167589c..7a4603c 100644
--- a/deploy/production/x2/compose.yaml
+++ b/deploy/production/x2/compose.yaml
@@ -2,7 +2,7 @@ name: archive-control-cache
 
 services:
   archive-client:
-    image: sodium/archive-clients:v0.1.0
+    image: sodium/archive-clients:v0.1.1
     user: "1001:1001"
     restart: unless-stopped
     network_mode: host
diff --git a/docs/deployment-and-usage.md b/docs/deployment-and-usage.md
index 38db01f..dbf9a26 100644
--- a/docs/deployment-and-usage.md
+++ b/docs/deployment-and-usage.md
@@ -213,7 +213,7 @@ cache/archive routes according to policy.
 ```yaml
 services:
   archive-client:
-    image: sodium/archive-clients:v0.1.0
+    image: sodium/archive-clients:v0.1.1
     user: "1001:1001"
     restart: unless-stopped
     command: ["archive-client", "--config", "/etc/archive-control/client.toml"]
diff --git a/pyproject.toml b/pyproject.toml
index 3d99a2d..a349f9d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "archive-clients"
-version = "0.1.0"
+version = "0.1.1"
 requires-python = ">=3.11"
 dependencies = ["protobuf==7.35.1", "websockets==16.0"]
 
diff --git a/src/archive_clients/config.py b/src/archive_clients/config.py
index 0377aad..af64ea3 100644
--- a/src/archive_clients/config.py
+++ b/src/archive_clients/config.py
@@ -169,6 +169,8 @@ def _service(value: Any, name: str) -> ServiceConfig:
     username = value.get("username")
     if username is not None and (not isinstance(username, str) or not username):
         raise ConfigError(f"{name}.username must be a non-empty string")
+    if username is not None:
+        username = _expand(username)
     addresses = value.get("advertised_addresses", [])
     if not isinstance(addresses, list) or any(
         not isinstance(address, str) or not address for address in addresses
diff --git a/tests/test_config.py b/tests/test_config.py
index dbb273c..2dedf72 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -2,6 +2,7 @@ import os
 import tempfile
 import unittest
 from pathlib import Path
+from unittest.mock import patch
 
 from archive_clients.config import ClientConfig, ConfigError, RootMapping
 
@@ -18,10 +19,15 @@ class ConfigTests(unittest.TestCase):
             (root / "sync").mkdir()
             config_path = root / "client.toml"
             config_path.write_text(
-                _config(root, role="cache"), encoding="utf-8"
+                _config(root, role="cache").replace(
+                    'username = "admin"', 'username = "${QB_USER}"'
+                ),
+                encoding="utf-8",
             )
-            config = ClientConfig.load(config_path, "archive")
+            with patch.dict(os.environ, {"QB_USER": "admin"}):
+                config = ClientConfig.load(config_path, "archive")
             self.assertEqual(config.role, "archive")
+            self.assertEqual(config.qbittorrent.username, "admin")
             self.assertEqual(config.read_shared_token(), "token")
             self.assertEqual(
                 config.qbittorrent.roots.api_to_local("/downloads/a/b"),