diff --git a/acme/setup.py b/acme/setup.py
index 17be96bbd..c993b0f2e 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 = '1.5.0'
+version = '1.6.0.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 5cab4a8d1..a00f14080 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 = '1.5.0'
+version = '1.6.0.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 6e0a1ec3d..9a646d7ce 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 = '1.5.0'
+version = '1.6.0.dev0'
 
 install_requires = [
     'certbot',
diff --git a/certbot-dns-cloudflare/setup.py b/certbot-dns-cloudflare/setup.py
index d81cc56ab..91c3683b6 100644
--- a/certbot-dns-cloudflare/setup.py
+++ b/certbot-dns-cloudflare/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 e212dbf3d..579637dab 100644
--- a/certbot-dns-cloudxns/setup.py
+++ b/certbot-dns-cloudxns/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 0ab396216..d30167a14 100644
--- a/certbot-dns-digitalocean/setup.py
+++ b/certbot-dns-digitalocean/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 5c7d39f47..9ba71a7ea 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 = '1.5.0'
+version = '1.6.0.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 da10cd640..a5e025e66 100644
--- a/certbot-dns-dnsmadeeasy/setup.py
+++ b/certbot-dns-dnsmadeeasy/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 0c0fa0f64..8965e6b8c 100644
--- a/certbot-dns-gehirn/setup.py
+++ b/certbot-dns-gehirn/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 b05c68d35..27c5e6b05 100644
--- a/certbot-dns-google/setup.py
+++ b/certbot-dns-google/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 94bc93a98..ebe9660fa 100644
--- a/certbot-dns-linode/setup.py
+++ b/certbot-dns-linode/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 44ccfcb33..21daf4c57 100644
--- a/certbot-dns-luadns/setup.py
+++ b/certbot-dns-luadns/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 dad50f6d6..ad42991f9 100644
--- a/certbot-dns-nsone/setup.py
+++ b/certbot-dns-nsone/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 a45831abd..eee6ddc82 100644
--- a/certbot-dns-ovh/setup.py
+++ b/certbot-dns-ovh/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 579d545a5..d9863aedd 100644
--- a/certbot-dns-rfc2136/setup.py
+++ b/certbot-dns-rfc2136/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 63bc96318..c207e5db5 100644
--- a/certbot-dns-route53/setup.py
+++ b/certbot-dns-route53/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 2d858e900..06ce9613e 100644
--- a/certbot-dns-sakuracloud/setup.py
+++ b/certbot-dns-sakuracloud/setup.py
@@ -6,7 +6,7 @@ from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
-version = '1.5.0'
+version = '1.6.0.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 264e1592d..6138a06c2 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 = '1.5.0'
+version = '1.6.0.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 7fa3b681e..79e6c16a4 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__ = '1.5.0'
+__version__ = '1.6.0.dev0'
diff --git a/letsencrypt-auto-source/letsencrypt-auto b/letsencrypt-auto-source/letsencrypt-auto
index f99993b4f..23c5903ed 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="$VENV_PATH/certbot-auto-bootstrap-version.txt"
-LE_AUTO_VERSION="1.5.0"
+LE_AUTO_VERSION="1.6.0.dev0"
 BASENAME=$(basename $0)
 USAGE="Usage: $BASENAME [OPTIONS]
 A self-updating wrapper script for the Certbot ACME client. When run, updates