diff --git a/README.rst b/README.rst
index 3407b87d..b1b5bbed 100644
--- a/README.rst
+++ b/README.rst
@@ -6,6 +6,15 @@ gmpy2 adds support for correctly rounded multiple-precision real arithmetic
 Version 2.2
 -----------
 
+gmpy2 2.2.1
+-----------
+
+* Bug fix: use C int instead of C char for some internal code. Issue
+* Bug fix: add xmpz.bit_count method.
+
+gmpy2 2.2.0
+-----------
+
 gmpy2 2.2.0 is now available with support for Python 3.7 to 3.13.
 
 * Support for thread-safe contexts and context methods has been improved.
diff --git a/pyproject.toml b/pyproject.toml
index c3c185e4..d6e515a8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = 'setuptools.build_meta'
 
 [project]
 name = 'gmpy2'
-version = '2.2.1rc1'
+version = '2.2.1'
 description = 'gmpy2 interface to GMP, MPFR, and MPC for Python 3.7+'
 keywords = ['gmp', 'mpfr', 'mpc', 'multiple-precision',
             'arbitrary-precision', 'precision', 'bignum']
diff --git a/src/gmpy2.c b/src/gmpy2.c
index 2d5699f5..89ae1cd2 100644
--- a/src/gmpy2.c
+++ b/src/gmpy2.c
@@ -118,7 +118,7 @@
 
 /* The following global strings are used by gmpy_misc.c. */
 
-char gmpy_version[] = "2.2.1rc1";
+char gmpy_version[] = "2.2.1";
 
 char gmpy_license[] = "\
 The GMPY2 source code is licensed under LGPL 3 or later. The supported \