diff --git a/CHANGELOG.md b/CHANGELOG.md
index dec3a30..547dd2a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ this project uses date-based 'snapshot' version identifiers.
 
 ## [Unreleased]
 
+## [2023-12-13]
+
 ### Fixed
 - Syntax warning on Windows with some test setups
 
@@ -735,7 +737,8 @@ this project uses date-based 'snapshot' version identifiers.
 - Rationalise short option names: removed `-d`, `-E`, `-r`
 - Target `cmdcheck`: specific to LaTeX kernel work
 
-[Unreleased]: https://github.com/latex3/l3build/compare/2023-12-12...HEAD
+[Unreleased]: https://github.com/latex3/l3build/compare/2023-12-13...HEAD
+[2023-12-13]: https://github.com/latex3/l3build/compare/2023-12-12...2023-12-13
 [2023-12-12]: https://github.com/latex3/l3build/compare/2023-11-01...2023-12-12
 [2023-11-01]: https://github.com/latex3/l3build/compare/2023-09-13...2023-11-01
 [2023-09-13]: https://github.com/latex3/l3build/compare/2023-09-07...2023-09-13
diff --git a/README.md b/README.md
index 55b22f6..73ea0f7 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 l3build: a testing and building system for LaTeX
 =================================================
 
-Release 2023-12-12
+Release 2023-12-13
 
 Overview
 --------
diff --git a/l3build.1 b/l3build.1
index da81ed4..c57b2e2 100644
--- a/l3build.1
+++ b/l3build.1
@@ -1,4 +1,4 @@
-.TH l3build 1 "2023-12-12"
+.TH l3build 1 "2023-12-13"
 .SH NAME
 l3build \- Checking and building packages
 .SH SYNOPSIS
diff --git a/l3build.dtx b/l3build.dtx
index 444f6f8..ada52e4 100644
--- a/l3build.dtx
+++ b/l3build.dtx
@@ -251,7 +251,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2023-12-12}
+% \date{Released 2023-12-13}
 %
 % \maketitle
 % \tableofcontents
diff --git a/l3build.lua b/l3build.lua
index 4919d93..929252b 100644
--- a/l3build.lua
+++ b/l3build.lua
@@ -23,7 +23,7 @@ for those people who are interested.
 --]]
 
 -- Version information
-release_date = "2023-12-12"
+release_date = "2023-12-13"
 
 -- File operations are aided by the LuaFileSystem module
 local lfs = require("lfs")