diff --git a/devlib/target.py b/devlib/target.py
index 8b551882a..d65912272 100644
--- a/devlib/target.py
+++ b/devlib/target.py
@@ -312,6 +312,7 @@ def __init__(self,
                  connection_settings=None,
                  platform=None,
                  working_directory=None,
+                 *,
                  executables_directory=None,
                  tmp_directory=None,
                  connect=True,
@@ -1791,6 +1792,7 @@ def __init__(self,
                  connection_settings=None,
                  platform=None,
                  working_directory=None,
+                 *,
                  executables_directory=None,
                  tmp_directory=None,
                  connect=True,
@@ -2001,6 +2003,7 @@ def __init__(self,
                  connection_settings=None,
                  platform=None,
                  working_directory=None,
+                 *,
                  executables_directory=None,
                  tmp_directory=None,
                  connect=True,
@@ -3089,6 +3092,7 @@ def __init__(self,
                  connection_settings=None,
                  platform=None,
                  working_directory=None,
+                 *,
                  executables_directory=None,
                  tmp_directory=None,
                  connect=True,
@@ -3175,6 +3179,7 @@ def __init__(self,
                  connection_settings=None,
                  platform=None,
                  working_directory=None,
+                 *,
                  executables_directory=None,
                  android_working_directory=None,
                  android_executables_directory=None,