diff --git a/.bumpversion.toml b/.bumpversion.toml
index e09d8c3..69fa56f 100644
--- a/.bumpversion.toml
+++ b/.bumpversion.toml
@@ -1,5 +1,5 @@
 [tool.bumpversion]
-current_version = "1.2.0a1"
+current_version = "1.3.0a1"
 parse = '''
      (?P<major>[\d]+) # major version number
      \.(?P<minor>[\d]+) # minor version number
diff --git a/dbt/adapters/mariadb/__version__.py b/dbt/adapters/mariadb/__version__.py
index a6b9772..a9fe3c3 100644
--- a/dbt/adapters/mariadb/__version__.py
+++ b/dbt/adapters/mariadb/__version__.py
@@ -1 +1 @@
-version = "1.2.0a1"
+version = "1.3.0a1"
diff --git a/dbt/adapters/mysql/__version__.py b/dbt/adapters/mysql/__version__.py
index a6b9772..a9fe3c3 100644
--- a/dbt/adapters/mysql/__version__.py
+++ b/dbt/adapters/mysql/__version__.py
@@ -1 +1 @@
-version = "1.2.0a1"
+version = "1.3.0a1"
diff --git a/dbt/adapters/mysql5/__version__.py b/dbt/adapters/mysql5/__version__.py
index a6b9772..a9fe3c3 100644
--- a/dbt/adapters/mysql5/__version__.py
+++ b/dbt/adapters/mysql5/__version__.py
@@ -1 +1 @@
-version = "1.2.0a1"
+version = "1.3.0a1"
diff --git a/dev-requirements.txt b/dev-requirements.txt
index b52651f..75fdb4f 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,7 +1,7 @@
 # install latest changes in dbt-core
 # TODO: how to automate switching from develop to version branches?
-git+https://github.com/dbt-labs/dbt-core.git@1.2.latest#egg=dbt-core&subdirectory=core
-git+https://github.com/dbt-labs/dbt-core.git@1.2.latest#egg=dbt-tests-adapter&subdirectory=tests/adapter
+git+https://github.com/dbt-labs/dbt-core.git@1.3.latest#egg=dbt-core&subdirectory=core
+git+https://github.com/dbt-labs/dbt-core.git@1.3.latest#egg=dbt-tests-adapter&subdirectory=tests/adapter
 
 # if version 1.x or greater -> pin to major version
 # if version 0.x -> pin to minor
diff --git a/setup.py b/setup.py
index c176ec4..213ac9c 100644
--- a/setup.py
+++ b/setup.py
@@ -51,7 +51,7 @@ def _get_dbt_core_version():
 
 
 package_name = "dbt-mysql"
-package_version = "1.2.0a1"
+package_version = "1.3.0a1"
 dbt_core_version = _get_dbt_core_version()
 description = """The MySQL adapter plugin for dbt"""