diff --git a/setup.cfg b/setup.cfg
index 4f7f6359e..314f24b3c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -33,7 +33,7 @@ files =
     uvicorn/server.py,
     uvicorn/__init__.py,
     uvicorn/__main__.py,
-    uvicorn/subprocess.py,
+    uvicorn/_subprocess.py,
     uvicorn/protocols/http/flow_control.py,
     uvicorn/supervisors/statreload.py,
     uvicorn/supervisors/multiprocess.py,
diff --git a/uvicorn/subprocess.py b/uvicorn/_subprocess.py
similarity index 100%
rename from uvicorn/subprocess.py
rename to uvicorn/_subprocess.py
diff --git a/uvicorn/supervisors/basereload.py b/uvicorn/supervisors/basereload.py
index 679f2df25..a3f52f824 100644
--- a/uvicorn/supervisors/basereload.py
+++ b/uvicorn/supervisors/basereload.py
@@ -8,8 +8,8 @@
 
 import click
 
+from uvicorn._subprocess import get_subprocess
 from uvicorn.config import Config
-from uvicorn.subprocess import get_subprocess
 
 HANDLED_SIGNALS = (
     signal.SIGINT,  # Unix signal 2. Sent by Ctrl+C.
diff --git a/uvicorn/supervisors/multiprocess.py b/uvicorn/supervisors/multiprocess.py
index ee86f8e51..76416c2fd 100644
--- a/uvicorn/supervisors/multiprocess.py
+++ b/uvicorn/supervisors/multiprocess.py
@@ -9,8 +9,8 @@
 
 import click
 
+from uvicorn._subprocess import get_subprocess
 from uvicorn.config import Config
-from uvicorn.subprocess import get_subprocess
 
 HANDLED_SIGNALS = (
     signal.SIGINT,  # Unix signal 2. Sent by Ctrl+C.