diff --git a/changes/1810.fix.md b/changes/1810.fix.md
new file mode 100644
index 00000000000..5d91bede924
--- /dev/null
+++ b/changes/1810.fix.md
@@ -0,0 +1 @@
+Fix an issue in the `ModifyContainerRegistry` mutation where the `url` was not updating due to a key mismatch.
diff --git a/src/ai/backend/manager/models/etcd.py b/src/ai/backend/manager/models/etcd.py
index 9f642e2f01e..b6436d1a104 100644
--- a/src/ai/backend/manager/models/etcd.py
+++ b/src/ai/backend/manager/models/etcd.py
@@ -164,6 +164,8 @@ async def mutate(
         set_if_set(props, input_config, "username")
         set_if_set(props, input_config, "password")
         set_if_set(props, input_config, "ssl_verify")
+        if "url" in input_config:
+            input_config[""] = input_config.pop("url")
         log.info(
             "ETCD.MODIFY_CONTAINER_REGISTRY (ak:{}, hostname:{}, config:{})",
             ctx.access_key,
diff --git a/tests/manager/models/test_etcd.py b/tests/manager/models/test_etcd.py
index 66c9c9e3f6e..7996e7b3e16 100644
--- a/tests/manager/models/test_etcd.py
+++ b/tests/manager/models/test_etcd.py
@@ -122,6 +122,7 @@ async def test_modify_container_registry(client: Client, context: GraphQueryCont
     variables = {
         "hostname": "cr.example.com",
         "props": {
+            "url": "http://cr2.example.com",
             "type": "harbor2",
             "project": ["default", "example"],
         },
@@ -130,7 +131,7 @@ async def test_modify_container_registry(client: Client, context: GraphQueryCont
     response = await client.execute_async(query, variables=variables, context_value=context)
     container_registry = response["data"]["modify_container_registry"]["container_registry"]
     assert container_registry["hostname"] == "cr.example.com"
-    assert container_registry["config"]["url"] == "http://cr.example.com"
+    assert container_registry["config"]["url"] == "http://cr2.example.com"
     assert container_registry["config"]["type"] == "harbor2"
     assert container_registry["config"]["project"] == ["default", "example"]
     assert container_registry["config"]["username"] == "username2"
@@ -162,7 +163,7 @@ async def test_modify_container_registry_allows_empty_string(
     response = await client.execute_async(query, variables=variables, context_value=context)
     container_registry = response["data"]["modify_container_registry"]["container_registry"]
     assert container_registry["hostname"] == "cr.example.com"
-    assert container_registry["config"]["url"] == "http://cr.example.com"
+    assert container_registry["config"]["url"] == "http://cr2.example.com"
     assert container_registry["config"]["type"] == "harbor2"
     assert container_registry["config"]["project"] == ["default", "example"]
     assert container_registry["config"]["username"] == "username2"
@@ -198,7 +199,7 @@ async def test_modify_container_registry_allows_null_for_unset(
     response = await client.execute_async(query, variables=variables, context_value=context)
     container_registry = response["data"]["modify_container_registry"]["container_registry"]
     assert container_registry["hostname"] == "cr.example.com"
-    assert container_registry["config"]["url"] == "http://cr.example.com"
+    assert container_registry["config"]["url"] == "http://cr2.example.com"
     assert container_registry["config"]["type"] == "harbor2"
     assert container_registry["config"]["project"] == ["default", "example"]
     assert container_registry["config"]["username"] == "username2"