diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04c377b1a85cc0c8f1016e672d8f2810da589bbf..3512f63ad88c204a556ddd70eb637e6693996424 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,4 @@ The changelog is kept as [release notes](https://github.com/smok-serwis/coolamqp
 on GitHub. This file serves to only note what changes
 have been made so far, between releases.
 
-# v1.2.11
-
-* made CoolAMQP importable on Windows
+# v1.2.12
diff --git a/coolamqp/__init__.py b/coolamqp/__init__.py
index a8102c1e23363d69910634acdaded20cb8ad2d9f..494d006696043e029ca4730f5b9b6ea2186eed4d 100644
--- a/coolamqp/__init__.py
+++ b/coolamqp/__init__.py
@@ -1 +1 @@
-__version__ = '1.2.11'
+__version__ = '1.2.12_a1'