diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5223b2e8..6a0e34bc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Change log
 
+## 0.12.4 - 2020-27-08
+
+👌 IMPROVE: the mathjax extension is now only overridden if strictly necessary (to support dollar and ams math), and the override is more precise, to mitigate any unwanted side-effects
+
 ## 0.12.3 - 2020-26-08
 
 ✨ NEW: Add definition lists.
diff --git a/myst_parser/__init__.py b/myst_parser/__init__.py
index 27e88cfa..6be647cb 100644
--- a/myst_parser/__init__.py
+++ b/myst_parser/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.12.3"
+__version__ = "0.12.4"
 
 
 def setup(app):