diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8432076d..76e49ad4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Change Log / Release Log for openPMD-viewer
 
+## 1.3.0
+
+This new release introduces preliminary support for MR datasets
+(see [#332](https://github.com/openPMD/openPMD-viewer/pull/332)).
+
 ## 1.2.0
 
 This new release introduces several bug-fixes and miscellaneous features:
diff --git a/openpmd_viewer/__version__.py b/openpmd_viewer/__version__.py
index c68196d1..67bc602a 100644
--- a/openpmd_viewer/__version__.py
+++ b/openpmd_viewer/__version__.py
@@ -1 +1 @@
-__version__ = "1.2.0"
+__version__ = "1.3.0"