diff --git a/homeassistant/components/python_script.py b/homeassistant/components/python_script.py
index 3892540996a..2082d824dca 100644
--- a/homeassistant/components/python_script.py
+++ b/homeassistant/components/python_script.py
@@ -9,7 +9,7 @@ from homeassistant.exceptions import HomeAssistantError
 from homeassistant.util import sanitize_filename
 
 DOMAIN = 'python_script'
-REQUIREMENTS = ['restrictedpython==4.0a2']
+REQUIREMENTS = ['restrictedpython==4.0a3']
 FOLDER = 'python_scripts'
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/requirements_all.txt b/requirements_all.txt
index 59359ad3c7d..a3449ecb424 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -770,7 +770,7 @@ radiotherm==1.2
 # raspihats==2.2.1
 
 # homeassistant.components.python_script
-restrictedpython==4.0a2
+restrictedpython==4.0a3
 
 # homeassistant.components.rflink
 rflink==0.0.34
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 4b115713410..83c083f1ba7 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -108,7 +108,7 @@ pyunifi==2.13
 pywebpush==1.0.5
 
 # homeassistant.components.python_script
-restrictedpython==4.0a2
+restrictedpython==4.0a3
 
 # homeassistant.components.rflink
 rflink==0.0.34