diff --git a/base/README.md b/base/README.md
index 18b3a5fcc..8fb5e8e89 100644
--- a/base/README.md
+++ b/base/README.md
@@ -1,7 +1,7 @@
 The LaTeX kernel
 ================
 
-Release 2022-11-01
+Release 2023-05-01 pre-release 0
 
 Overview
 --------
diff --git a/base/ltvers.dtx b/base/ltvers.dtx
index 002e3b5bd..a170ce98e 100644
--- a/base/ltvers.dtx
+++ b/base/ltvers.dtx
@@ -112,10 +112,10 @@
 %</2ekernel>
 %<latexrelease>\edef\latexreleaseversion
 %<*2ekernel|latexrelease>
-   {2022-11-01}
+   {2023-05-01}
 %</2ekernel|latexrelease>
 %<*2ekernel>
-\def\patch@level{0}
+\def\patch@level{-0}
 %    \end{macrocode}
 %
 % \begin{macro}{\development@branch@name}
diff --git a/required/amsmath/README.md b/required/amsmath/README.md
index 1bc170248..059ebb7f3 100644
--- a/required/amsmath/README.md
+++ b/required/amsmath/README.md
@@ -1,7 +1,7 @@
 The amsmath bundle for LaTeX
 ============================
 
-Release 2022-06-01
+Release 2023-05-01 pre-release 0
 
 Overview
 --------
diff --git a/required/graphics/README.md b/required/graphics/README.md
index 8c89a0611..0705aac31 100644
--- a/required/graphics/README.md
+++ b/required/graphics/README.md
@@ -1,7 +1,7 @@
 The LaTeX `graphics` bundle
 ===========================
 
-Release 2022-11-01
+Release 2023-05-01 pre-release 0
 
 Overview
 --------
diff --git a/required/latex-lab/README.md b/required/latex-lab/README.md
index 7f1a27579..54e693484 100644
--- a/required/latex-lab/README.md
+++ b/required/latex-lab/README.md
@@ -1,6 +1,6 @@
 # LaTeX laboratory
 
-Release 2022-11-01
+Release 2023-05-01 pre-release 0
 
 ## Overview
 
diff --git a/required/tools/README.md b/required/tools/README.md
index 5dba58d23..a7e8675cb 100644
--- a/required/tools/README.md
+++ b/required/tools/README.md
@@ -1,7 +1,7 @@
 The LaTeX `tools` bundle
 ========================
 
-Release 2022-11-01
+Release 2023-05-01 pre-release 0
 
 Overview
 --------