diff --git a/lisp/calc/README b/lisp/calc/README
index 5dfaf57403c..bed46422972 100644
--- a/lisp/calc/README
+++ b/lisp/calc/README
@@ -233,7 +233,7 @@ This file is part of GNU Emacs.
 
 GNU Emacs is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
 any later version.
 
 GNU Emacs is distributed in the hope that it will be useful,
diff --git a/lisp/calc/README.prev b/lisp/calc/README.prev
index 3dfcfc7fac7..a805b9a1a9a 100644
--- a/lisp/calc/README.prev
+++ b/lisp/calc/README.prev
@@ -987,7 +987,7 @@ This file is part of GNU Emacs.
 
 GNU Emacs is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
 any later version.
 
 GNU Emacs is distributed in the hope that it will be useful,