diff --git a/CHANGELOG.md b/CHANGELOG.md
index 855b7b17..282cd4ee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+**Fixes**
+- js: Fixed an error when reading debug IDs from sourcemaps with
+  both `"debugId"` and `"debug_id"` keys ([#877](https://github.com/getsentry/symbolic/pull/877)).
+
 ## 12.12.1
 
 **Features**: