diff --git a/README.md b/README.md
index d5eab75a..6e254827 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ Most of the nucleotide based commands and options in USEARCH version 7 are suppo
 
 ## Getting Help
 
-If you can't find an answer in the [VSEARCH documentation](https://github.com/torognes/vsearch/releases/download/v2.15.1/vsearch_manual.pdf), please visit the [VSEARCH Web Forum](https://groups.google.com/forum/#!forum/vsearch-forum) to post a question or start a discussion.
+If you can't find an answer in the [VSEARCH documentation](https://github.com/torognes/vsearch/releases/download/v2.15.2/vsearch_manual.pdf), please visit the [VSEARCH Web Forum](https://groups.google.com/forum/#!forum/vsearch-forum) to post a question or start a discussion.
 
 ## Example
 
@@ -47,9 +47,9 @@ In the example below, VSEARCH will identify sequences in the file database.fsa t
 **Source distribution** To download the source distribution from a [release](https://github.com/torognes/vsearch/releases) and build the executable and the documentation, use the following commands:
 
 ```
-wget https://github.com/torognes/vsearch/archive/v2.15.1.tar.gz
-tar xzf v2.15.1.tar.gz
-cd vsearch-2.15.1
+wget https://github.com/torognes/vsearch/archive/v2.15.2.tar.gz
+tar xzf v2.15.2.tar.gz
+cd vsearch-2.15.2
 ./autogen.sh
 ./configure
 make
@@ -78,43 +78,43 @@ Binary distributions are provided for x86-64 systems running GNU/Linux, macOS (v
 Download the appropriate executable for your system using the following commands if you are using a Linux x86_64 system:
 
 ```sh
-wget https://github.com/torognes/vsearch/releases/download/v2.15.1/vsearch-2.15.1-linux-x86_64.tar.gz
-tar xzf vsearch-2.15.1-linux-x86_64.tar.gz
+wget https://github.com/torognes/vsearch/releases/download/v2.15.2/vsearch-2.15.2-linux-x86_64.tar.gz
+tar xzf vsearch-2.15.2-linux-x86_64.tar.gz
 ```
 
 Or these commands if you are using a Linux ppc64le system:
 
 ```sh
-wget https://github.com/torognes/vsearch/releases/download/v2.15.1/vsearch-2.15.1-linux-ppc64le.tar.gz
-tar xzf vsearch-2.15.1-linux-ppc64le.tar.gz
+wget https://github.com/torognes/vsearch/releases/download/v2.15.2/vsearch-2.15.2-linux-ppc64le.tar.gz
+tar xzf vsearch-2.15.2-linux-ppc64le.tar.gz
 ```
 
 Or these commands if you are using a Linux aarch64 system:
 
 ```sh
-wget https://github.com/torognes/vsearch/releases/download/v2.15.1/vsearch-2.15.1-linux-aarch64.tar.gz
-tar xzf vsearch-2.15.1-linux-aarch64.tar.gz
+wget https://github.com/torognes/vsearch/releases/download/v2.15.2/vsearch-2.15.2-linux-aarch64.tar.gz
+tar xzf vsearch-2.15.2-linux-aarch64.tar.gz
 ```
 
 Or these commands if you are using a Mac:
 
 ```sh
-wget https://github.com/torognes/vsearch/releases/download/v2.15.1/vsearch-2.15.1-macos-x86_64.tar.gz
-tar xzf vsearch-2.15.1-macos-x86_64.tar.gz
+wget https://github.com/torognes/vsearch/releases/download/v2.15.2/vsearch-2.15.2-macos-x86_64.tar.gz
+tar xzf vsearch-2.15.2-macos-x86_64.tar.gz
 ```
 
 Or if you are using Windows, download and extract (unzip) the contents of this file:
 
 ```
-https://github.com/torognes/vsearch/releases/download/v2.15.1/vsearch-2.15.1-win-x86_64.zip
+https://github.com/torognes/vsearch/releases/download/v2.15.2/vsearch-2.15.2-win-x86_64.zip
 ```
 
-Linux and Mac: You will now have the binary distribution in a folder called `vsearch-2.15.1-linux-x86_64` or `vsearch-2.15.1-macos-x86_64` in which you will find three subfolders `bin`, `man` and `doc`. We recommend making a copy or a symbolic link to the vsearch binary `bin/vsearch` in a folder included in your `$PATH`, and a copy or a symbolic link to the vsearch man page `man/vsearch.1` in a folder included in your `$MANPATH`. The PDF version of the manual is available in `doc/vsearch_manual.pdf`.
+Linux and Mac: You will now have the binary distribution in a folder called `vsearch-2.15.2-linux-x86_64` or `vsearch-2.15.2-macos-x86_64` in which you will find three subfolders `bin`, `man` and `doc`. We recommend making a copy or a symbolic link to the vsearch binary `bin/vsearch` in a folder included in your `$PATH`, and a copy or a symbolic link to the vsearch man page `man/vsearch.1` in a folder included in your `$MANPATH`. The PDF version of the manual is available in `doc/vsearch_manual.pdf`.
 
-Windows: You will now have the binary distribution in a folder called `vsearch-2.15.1-win-x86_64`. The vsearch executable is called `vsearch.exe`. The manual in PDF format is called `vsearch_manual.pdf`.
+Windows: You will now have the binary distribution in a folder called `vsearch-2.15.2-win-x86_64`. The vsearch executable is called `vsearch.exe`. The manual in PDF format is called `vsearch_manual.pdf`.
 
 
-**Documentation** The VSEARCH user's manual is available in the `man` folder in the form of a [man page](https://github.com/torognes/vsearch/blob/master/man/vsearch.1). A pdf version ([vsearch_manual.pdf](https://github.com/torognes/vsearch/releases/download/v2.15.1/vsearch_manual.pdf)) will be generated by `make`. To install the manpage manually, copy the `vsearch.1` file or a create a symbolic link to `vsearch.1` in a folder included in your `$MANPATH`. The manual in both formats is also available with the binary distribution. The manual in PDF form ([vsearch_manual.pdf](https://github.com/torognes/vsearch/releases/download/v2.15.1/vsearch_manual.pdf)) is also attached to the latest [release](https://github.com/torognes/vsearch/releases).
+**Documentation** The VSEARCH user's manual is available in the `man` folder in the form of a [man page](https://github.com/torognes/vsearch/blob/master/man/vsearch.1). A pdf version ([vsearch_manual.pdf](https://github.com/torognes/vsearch/releases/download/v2.15.2/vsearch_manual.pdf)) will be generated by `make`. To install the manpage manually, copy the `vsearch.1` file or a create a symbolic link to `vsearch.1` in a folder included in your `$MANPATH`. The manual in both formats is also available with the binary distribution. The manual in PDF form ([vsearch_manual.pdf](https://github.com/torognes/vsearch/releases/download/v2.15.2/vsearch_manual.pdf)) is also attached to the latest [release](https://github.com/torognes/vsearch/releases).
 
 
 ## Packages, plugins, and wrappers
diff --git a/configure.ac b/configure.ac
index d09230e5..16d2880a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.63])
-AC_INIT([vsearch], [2.15.1], [torognes@ifi.uio.no], [vsearch], [https://github.com/torognes/vsearch])
+AC_INIT([vsearch], [2.15.2], [torognes@ifi.uio.no], [vsearch], [https://github.com/torognes/vsearch])
 AC_CANONICAL_TARGET
 AM_INIT_AUTOMAKE([subdir-objects])
 AC_LANG([C++])
diff --git a/man/vsearch.1 b/man/vsearch.1
index e641d842..693a698d 100644
--- a/man/vsearch.1
+++ b/man/vsearch.1
@@ -1,5 +1,5 @@
 .\" ============================================================================
-.TH vsearch 1 "January 26, 2021" "version 2.15.1" "USER COMMANDS"
+.TH vsearch 1 "January 26, 2021" "version 2.15.2" "USER COMMANDS"
 .\" ============================================================================
 .SH NAME
 vsearch \(em chimera detection, clustering, dereplication and
@@ -4299,6 +4299,14 @@ headers. Make some extra checks when loading compression libraries and
 add more diagnostic output about them to the output of the version
 command. Report an error when fastx_filter is used with FASTA input
 and options that require FASTQ input. Update manual.
+.TP
+.BR v2.15.2\~ "released January 26th, 2021"
+No real functional changes, but some code and compilation
+changes. Compiles successfully on macOS running on Apple Silicon
+(ARMv8).  Binaries available. Code updated for C++11. Minor
+adaptations for Windows compatibility, including the use of the C++
+standard library for regular expressions. Minor changes for
+compatibility with Power8. Switch to C++ header files.
 .LP
 .\" ============================================================================
 .\" TODO: