diff --git a/CHANGELOG.md b/CHANGELOG.md
index d67dd63..4706902 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,12 +3,14 @@ All notable changes will be documented in this file, particularly any breaking
 changes. This project adheres to [Semantic Versioning](http://semver.org).
 
 ## [x.x.x]
-- Changed - The way the MigrationDocument's Id is determined. Multiple underscores
+
+## [2.0.0]
+- Changed (breaking) - The way the MigrationDocument's Id is determined. Multiple underscores
   will now combined into one separator to be used between each section of the Id.
-  This could be a breaking change if there are migrations named with multiple
-  underscores, depending on the version of Raven client and server in use. Some
+  **This could be a breaking change if there are migrations named with multiple
+  underscores**, depending on the version of Raven client and server in use. Some
   versions of Raven ignore multiple separators and others do not. This change
-  could cause migrations to be run multiple times in some cases if the ids are not
+  **could cause migrations to be run multiple times** in some cases if the ids are not
   changed first.
 - Added - Ability to inherit from `MigrationAttribute` to specify custom migration
   versions.
diff --git a/appveyor.yml b/appveyor.yml
index 1608ee2..74edf2a 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -7,7 +7,7 @@ assembly_info:
   assembly_file_version: $(core_version)
   assembly_informational_version: $(core_version)
 environment:
-  core_version: 1.2.0
+  core_version: 2.0.0
 nuget:
   disable_publish_on_pr: true
 build: