diff --git a/claude_bottle/backend/docker/backend.py b/claude_bottle/backend/docker/backend.py
index b0e50ce..e47a82e 100644
--- a/claude_bottle/backend/docker/backend.py
+++ b/claude_bottle/backend/docker/backend.py
@@ -29,7 +29,11 @@ from . import util as docker_mod
 from .bottle import DockerBottle
 from .bottle_cleanup_plan import DockerBottleCleanupPlan
 from .bottle_plan import DockerBottlePlan
-from .pipelock import DockerPipelockProxy
+from .pipelock import (
+    DockerPipelockProxy,
+    pipelock_proxy_host_port,
+    pipelock_proxy_url,
+)
 
 
 # Where the repo root lives, for `docker build` context. Computed once.
@@ -204,7 +208,7 @@ class DockerBottleBackend(BottleBackend):
         """Build the `docker run` argv and execute it, handling
         name-conflict races by incrementing the suffix (unless the name
         was user-pinned). Returns the resolved container name."""
-        proxy_url = pipelock.pipelock_proxy_url(plan.slug)
+        proxy_url = pipelock_proxy_url(plan.slug)
         docker_args: list[str] = [
             "--rm", "-d",
             "--name", plan.container_name,
@@ -411,7 +415,7 @@ class DockerBottleBackend(BottleBackend):
             return
 
         container = target
-        proxy_host_port = pipelock.pipelock_proxy_host_port(plan.slug)
+        proxy_host_port = pipelock_proxy_host_port(plan.slug)
         container_home = os.environ.get("CLAUDE_BOTTLE_CONTAINER_HOME", "/home/node")
         container_ssh = f"{container_home}/.ssh"
         agent_socket = "/run/claude-bottle-agent.sock"
diff --git a/claude_bottle/backend/docker/pipelock.py b/claude_bottle/backend/docker/pipelock.py
index 82bcebd..0e0bdc1 100644
--- a/claude_bottle/backend/docker/pipelock.py
+++ b/claude_bottle/backend/docker/pipelock.py
@@ -12,10 +12,21 @@ from ...pipelock import (
     PIPELOCK_PORT,
     PipelockProxy,
     PipelockProxyPlan,
-    pipelock_container_name,
 )
 
 
+def pipelock_container_name(slug: str) -> str:
+    return f"claude-bottle-pipelock-{slug}"
+
+
+def pipelock_proxy_url(slug: str) -> str:
+    return f"http://{pipelock_container_name(slug)}:{PIPELOCK_PORT}"
+
+
+def pipelock_proxy_host_port(slug: str) -> str:
+    return f"{pipelock_container_name(slug)}:{PIPELOCK_PORT}"
+
+
 class DockerPipelockProxy(PipelockProxy):
     """Brings the pipelock sidecar up and down via Docker."""
 
diff --git a/claude_bottle/pipelock.py b/claude_bottle/pipelock.py
index 0835aca..9d799d8 100644
--- a/claude_bottle/pipelock.py
+++ b/claude_bottle/pipelock.py
@@ -42,18 +42,6 @@ DEFAULT_ALLOWLIST: tuple[str, ...] = (
 )
 
 
-def pipelock_container_name(slug: str) -> str:
-    return f"claude-bottle-pipelock-{slug}"
-
-
-def pipelock_proxy_url(slug: str) -> str:
-    return f"http://{pipelock_container_name(slug)}:{PIPELOCK_PORT}"
-
-
-def pipelock_proxy_host_port(slug: str) -> str:
-    return f"{pipelock_container_name(slug)}:{PIPELOCK_PORT}"
-
-
 # --- Allowlist resolution --------------------------------------------------
 
 
diff --git a/tests/test_orphan_cleanup.py b/tests/test_orphan_cleanup.py
index 40218e2..928fbf3 100644
--- a/tests/test_orphan_cleanup.py
+++ b/tests/test_orphan_cleanup.py
@@ -13,8 +13,10 @@ from claude_bottle.backend.docker.network import (
     network_create_internal,
     network_remove,
 )
-from claude_bottle.backend.docker.pipelock import DockerPipelockProxy
-from claude_bottle.pipelock import pipelock_container_name
+from claude_bottle.backend.docker.pipelock import (
+    DockerPipelockProxy,
+    pipelock_container_name,
+)
 from tests._docker import skip_unless_docker