diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc502355..57868a2a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,14 @@
 # Change Log
 
-**Note**: some releases may have changes that may break backward compatibility;
-these changes are prefixed with "**BREAKING**"
-
 ## [Unreleased][unreleased]
 
+(no unreleased changes yet)
+
+
+## [v1.2.4]
+
+**Release date: 2020-05-12**
+
 ### Fixed
 
 * `delphin.tsdb.open()` does not use universal newlines ([#285])
@@ -1213,6 +1217,7 @@ information about changes, except for
 [commit messages](../../commits/v0.2).
 
 [unreleased]: ../../tree/develop
+[v1.2.4]: ../../releases/tag/v1.2.4
 [v1.2.3]: ../../releases/tag/v1.2.3
 [v1.2.2]: ../../releases/tag/v1.2.2
 [v1.2.1]: ../../releases/tag/v1.2.1
diff --git a/delphin/__about__.py b/delphin/__about__.py
index dfa67be4..7bb88093 100644
--- a/delphin/__about__.py
+++ b/delphin/__about__.py
@@ -3,7 +3,7 @@
 # the warehouse project:
 #   https://github.com/pypa/warehouse/blob/master/warehouse/__about__.py
 
-__version__ = '1.2.3'
+__version__ = '1.2.4'
 __version_info__ = __version__.replace('.', ' ').replace('-', ' ').split()
 
 __title__ = 'PyDelphin'