diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b4c819a..fb3c5a6d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Removed
 
+## [12.0.0] - 2025-01-27
+
+### Removed
+
+- This is a MAJOR release in that it removes support for hackage, carthage, hex, clojar, and swiftpm
+  from Bibliothecary. We are no longer doing any network calls when using Bibliothecary and reimplementing
+  parsing for those file types natively is non-trivial. Patches welcome :-)
+
+### Changed
+
+- Rewrote conda and yarn parsers to be in process vs calling out over the network
 
 ## [11.0.1] - 2024-12-20
 
diff --git a/lib/bibliothecary/version.rb b/lib/bibliothecary/version.rb
index 40563fe9..b7cecafa 100644
--- a/lib/bibliothecary/version.rb
+++ b/lib/bibliothecary/version.rb
@@ -1,3 +1,3 @@
 module Bibliothecary
-  VERSION = "11.0.1"
+  VERSION = "12.0.0"
 end