diff --git a/base/README.md b/base/README.md
index 694eedb2d..0ebb2a67e 100644
--- a/base/README.md
+++ b/base/README.md
@@ -1,7 +1,7 @@
 The LaTeX kernel
 ================
 
-Release 2021-06-01
+Release 2021-12-01 pre-release 0
 
 Overview
 --------
diff --git a/required/amsmath/README.md b/required/amsmath/README.md
index fad5c8746..d54338061 100644
--- a/required/amsmath/README.md
+++ b/required/amsmath/README.md
@@ -1,7 +1,7 @@
 The amsmath bundle for LaTeX
 ============================
 
-Release 2021-06-01
+Release 2021-12-01 pre-release 0
 
 Overview
 --------
diff --git a/required/graphics/README.md b/required/graphics/README.md
index ea0342418..c91e2aeab 100644
--- a/required/graphics/README.md
+++ b/required/graphics/README.md
@@ -1,7 +1,7 @@
 The LaTeX `graphics` bundle
 ===========================
 
-Release 2021-06-01
+Release 2021-12-01 pre-release 0
 
 Overview
 --------
diff --git a/required/tools/README.md b/required/tools/README.md
index 067b0240b..0b1b30879 100644
--- a/required/tools/README.md
+++ b/required/tools/README.md
@@ -1,7 +1,7 @@
 The LaTeX `tools` bundle
 ========================
 
-Release 2021-06-01
+Release 2021-12-01 pre-release 0
 
 Overview
 --------