diff --git a/CHANGELOG.md b/CHANGELOG.md
index 08995037..da92fdc3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+## 0.12.3 - 2018-10-19
+
+ * Fixed dart-lang/coverage#194. During collection, we now track each script by
+   its (unique) VMScriptRef. This ensures we look up the correct script when
+   computing the affected line for each hit token. The hitmap remains URI
+   based, since in the end, we want a single, unified set of line to hitCount
+   mappings per script.
+
 ## 0.12.2 - 2018-07-25
 
  * Dart SDK upper bound raised to <3.0.0.
diff --git a/pubspec.yaml b/pubspec.yaml
index 91506076..1e92a3f2 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: coverage
-version: 0.12.2
+version: 0.12.3
 author: Dart Team <misc@dartlang.org>
 description: Coverage data manipulation and formatting
 homepage: https://github.com/dart-lang/coverage