diff --git a/CHANGELOG.md b/CHANGELOG.md
index fe66d29..f5e57b2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 All notable changes to this project will be documented in this file.
 
+## [1.2.3] - 2020-01-22
+
+- Performance improvements.
+
 ## [1.2.2] - 2020-01-10
 
 - Dependency `uef-lib` updated to 2.5.3.
diff --git a/src/binbo.app.src b/src/binbo.app.src
index 080703d..4b89683 100644
--- a/src/binbo.app.src
+++ b/src/binbo.app.src
@@ -1,6 +1,6 @@
 {application, binbo, [
 	{description, "Full-featured Chess representation using Bitboards"},
-	{vsn, "1.2.2"},
+	{vsn, "1.2.3"},
 	{modules, []},
 	{registered, [binbo_sup]},
 	{applications, [kernel, stdlib, compiler, syntax_tools, uef]},