diff --git a/CHANGELOG.md b/CHANGELOG.md
index ba14df8..6399fab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 > **Warning:** This library is in beta. Breaking changes are no longer anticipated, but may still happen before 1.0 is tagged.
 
+## 1.0.0-beta.12
+
+- The base puzzle class is no longer abstract. It can be instantiated as used as a placeholder, but cannot be scrambled.
+
 ## 1.0.0-beta.11
 
 - Fix cubes not erroring when parsing prime double turns ([#29](https://github.com/scottbedard/twister/issues/29))
diff --git a/package-lock.json b/package-lock.json
index e8b0caa..15a9126 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@bedard/twister",
-  "version": "1.0.0-beta.11",
+  "version": "1.0.0-beta.12",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 9d6b2f0..52cb30a 100644
--- a/package.json
+++ b/package.json
@@ -46,5 +46,5 @@
     "test": "jest --coverage"
   },
   "unpkg": "dist/index.bundle.js",
-  "version": "1.0.0-beta.11"
+  "version": "1.0.0-beta.12"
 }