diff --git a/CHANGELOG.md b/CHANGELOG.md
index c891aa8a..7a1a7862 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ this project uses date-based 'snapshot' version identifiers.
 
 ## [Unreleased]
 
+## [2021-05-05]
+
 ### Changed
 - Normalise Lua function calls (issue #127) - may require `.tlg` update
 - LuaTeX from TL'21 is no longer 'off by one' in log files - may require
@@ -485,7 +487,8 @@ 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/2020-06-04...HEAD
+[Unreleased]: https://github.com/latex3/l3build/compare/2021-05-05...HEAD
+[2021-05-05]: https://github.com/latex3/l3build/compare/2020-06-04...2021-05-05
 [2020-06-04]: https://github.com/latex3/l3build/compare/2020-03-25...2020-06-04
 [2020-03-25]: https://github.com/latex3/l3build/compare/2020-03-16...2020-03-25
 [2020-03-16]: https://github.com/latex3/l3build/compare/2020-03-13...2020-03-16
diff --git a/README.md b/README.md
index d55aaf93..a5f49137 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 l3build: a testing and building system for LaTeX
 =================================================
 
-Release 2020-06-04
+Release 2021-05-05
 
 Overview
 --------
diff --git a/l3build.1 b/l3build.1
index 3569dc59..2bb47c30 100644
--- a/l3build.1
+++ b/l3build.1
@@ -1,4 +1,4 @@
-.TH l3build 1 "2020-06-04"
+.TH l3build 1 "2021-05-05"
 .SH NAME
 l3build \- Checking and building packages
 .SH SYNOPSIS
diff --git a/l3build.dtx b/l3build.dtx
index fbc3a1ad..9359b941 100644
--- a/l3build.dtx
+++ b/l3build.dtx
@@ -237,7 +237,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-06-04}
+% \date{Released 2021-05-05}
 %
 % \maketitle
 % \tableofcontents
diff --git a/l3build.lua b/l3build.lua
old mode 100755
new mode 100644
index d59def95..0b68ee16
--- a/l3build.lua
+++ b/l3build.lua
@@ -25,7 +25,7 @@ for those people who are interested.
 --]]
 
 -- Version information
-release_date = "2020-06-04"
+release_date = "2021-05-05"
 
 -- File operations are aided by the LuaFileSystem module
 local lfs = require("lfs")