diff --git a/acme/setup.py b/acme/setup.py
index ca13a020a..20244a7ad 100644
--- a/acme/setup.py
+++ b/acme/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Please update tox.ini when modifying dependency version requirements
 install_requires = [
diff --git a/certbot-apache/setup.py b/certbot-apache/setup.py
index 9787f7622..5ff00674c 100644
--- a/certbot-apache/setup.py
+++ b/certbot-apache/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot-compatibility-test/setup.py b/certbot-compatibility-test/setup.py
index e97555179..e26737a53 100644
--- a/certbot-compatibility-test/setup.py
+++ b/certbot-compatibility-test/setup.py
@@ -5,7 +5,7 @@ from setuptools import __version__ as setuptools_version
 from setuptools import find_packages
 from setuptools import setup
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 install_requires = [
     'certbot',
diff --git a/certbot-dns-cloudflare/setup.py b/certbot-dns-cloudflare/setup.py
index d9dea6080..8ae2bfafd 100644
--- a/certbot-dns-cloudflare/setup.py
+++ b/certbot-dns-cloudflare/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot-dns-cloudxns/setup.py b/certbot-dns-cloudxns/setup.py
index e5356f394..37324e9fc 100644
--- a/certbot-dns-cloudxns/setup.py
+++ b/certbot-dns-cloudxns/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot-dns-digitalocean/setup.py b/certbot-dns-digitalocean/setup.py
index 37d9f2025..1c041686e 100644
--- a/certbot-dns-digitalocean/setup.py
+++ b/certbot-dns-digitalocean/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot-dns-dnsimple/setup.py b/certbot-dns-dnsimple/setup.py
index 209ca6079..25e4fab8e 100644
--- a/certbot-dns-dnsimple/setup.py
+++ b/certbot-dns-dnsimple/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot-dns-dnsmadeeasy/setup.py b/certbot-dns-dnsmadeeasy/setup.py
index 673837182..5db1354fe 100644
--- a/certbot-dns-dnsmadeeasy/setup.py
+++ b/certbot-dns-dnsmadeeasy/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot-dns-gehirn/setup.py b/certbot-dns-gehirn/setup.py
index e80fac9e7..10797caa5 100644
--- a/certbot-dns-gehirn/setup.py
+++ b/certbot-dns-gehirn/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Please update tox.ini when modifying dependency version requirements
 install_requires = [
diff --git a/certbot-dns-google/setup.py b/certbot-dns-google/setup.py
index 4e0a11fe1..f6a881784 100644
--- a/certbot-dns-google/setup.py
+++ b/certbot-dns-google/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot-dns-linode/setup.py b/certbot-dns-linode/setup.py
index 048b39efa..e5ea9502b 100644
--- a/certbot-dns-linode/setup.py
+++ b/certbot-dns-linode/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Please update tox.ini when modifying dependency version requirements
 install_requires = [
diff --git a/certbot-dns-luadns/setup.py b/certbot-dns-luadns/setup.py
index fea8efa29..77d9578af 100644
--- a/certbot-dns-luadns/setup.py
+++ b/certbot-dns-luadns/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot-dns-nsone/setup.py b/certbot-dns-nsone/setup.py
index b6a32d713..105707e4a 100644
--- a/certbot-dns-nsone/setup.py
+++ b/certbot-dns-nsone/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot-dns-ovh/setup.py b/certbot-dns-ovh/setup.py
index 232380563..094fb0291 100644
--- a/certbot-dns-ovh/setup.py
+++ b/certbot-dns-ovh/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot-dns-rfc2136/setup.py b/certbot-dns-rfc2136/setup.py
index aa8582757..a03d565c4 100644
--- a/certbot-dns-rfc2136/setup.py
+++ b/certbot-dns-rfc2136/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot-dns-route53/setup.py b/certbot-dns-route53/setup.py
index cf9ff9219..041e40574 100644
--- a/certbot-dns-route53/setup.py
+++ b/certbot-dns-route53/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot-dns-sakuracloud/setup.py b/certbot-dns-sakuracloud/setup.py
index 536e6b2fb..94682939f 100644
--- a/certbot-dns-sakuracloud/setup.py
+++ b/certbot-dns-sakuracloud/setup.py
@@ -7,7 +7,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Please update tox.ini when modifying dependency version requirements
 install_requires = [
diff --git a/certbot-nginx/setup.py b/certbot-nginx/setup.py
index b041e7aa5..57f7f91c8 100644
--- a/certbot-nginx/setup.py
+++ b/certbot-nginx/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.8.0'
+version = '1.9.0.dev0'
 
 # Remember to update local-oldest-requirements.txt when changing the minimum
 # acme/certbot version.
diff --git a/certbot/certbot/__init__.py b/certbot/certbot/__init__.py
index 7b88d4a29..61b73a9ec 100644
--- a/certbot/certbot/__init__.py
+++ b/certbot/certbot/__init__.py
@@ -1,4 +1,4 @@
 """Certbot client."""
 
 # version number like 1.2.3a0, must have at least 2 parts, like 1.2
-__version__ = '1.8.0'
+__version__ = '1.9.0.dev0'
diff --git a/letsencrypt-auto-source/letsencrypt-auto b/letsencrypt-auto-source/letsencrypt-auto
index 626157081..7168ee2d1 100755
--- a/letsencrypt-auto-source/letsencrypt-auto
+++ b/letsencrypt-auto-source/letsencrypt-auto
@@ -31,7 +31,7 @@ if [ -z "$VENV_PATH" ]; then
 fi
 VENV_BIN="$VENV_PATH/bin"
 BOOTSTRAP_VERSION_PATH="$VENV_PATH/certbot-auto-bootstrap-version.txt"
-LE_AUTO_VERSION="1.8.0"
+LE_AUTO_VERSION="1.9.0.dev0"
 BASENAME=$(basename $0)
 USAGE="Usage: $BASENAME [OPTIONS]
 A self-updating wrapper script for the Certbot ACME client. When run, updates