diff --git a/.github/workflows/nightly-build.yml b/.github/workflows/nightly-build.yml
index 8536a395..e80eb705 100644
--- a/.github/workflows/nightly-build.yml
+++ b/.github/workflows/nightly-build.yml
@@ -39,7 +39,7 @@ jobs:
     runs-on: ${{ matrix.runner.RUNNER_OS }}
     env:
       PACKAGE_NAME: cmor
-      PACKAGE_VERSION: 3.15.0
+      PACKAGE_VERSION: 3.15.1
       PYTHON_VERSION: ${{ matrix.python_version }}
       CONDA_FORGE_CHANNEL: conda-forge
       CONDA_USER: pcmdi
diff --git a/CITATION.cff b/CITATION.cff
index 12c77e35..1b7f7a80 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -67,7 +67,7 @@ authors:
   orcid: "https://orcid.org/0000-0002-4040-0215"
   affiliation: "German Climate Computing Centre (DKRZ)"
 title: "The Climate Model Output Rewriter (CMOR)"
-version: 3.15.0
+version: 3.15.1
 doi: 10.5281/zenodo.592733 
-date-released: 2026-05-11
+date-released: 2026-05-20
 url: "https://github.com/PCMDI/cmor"
diff --git a/configure b/configure
index 684e367c..9fe4ee60 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for cmor 3.15.0.
+# Generated by GNU Autoconf 2.72 for cmor 3.15.1.
 #
 # Report bugs to <mauzey1@llnl.gov>.
 #
@@ -604,8 +604,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='cmor'
 PACKAGE_TARNAME='cmor'
-PACKAGE_VERSION='3.15.0'
-PACKAGE_STRING='cmor 3.15.0'
+PACKAGE_VERSION='3.15.1'
+PACKAGE_STRING='cmor 3.15.1'
 PACKAGE_BUGREPORT='mauzey1@llnl.gov'
 PACKAGE_URL=''
 
@@ -1288,7 +1288,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures cmor 3.15.0 to adapt to many kinds of systems.
+'configure' configures cmor 3.15.1 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1355,7 +1355,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of cmor 3.15.0:";;
+     short | recursive ) echo "Configuration of cmor 3.15.1:";;
    esac
   cat <<\_ACEOF
 
@@ -1461,7 +1461,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-cmor configure 3.15.0
+cmor configure 3.15.1
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -1709,7 +1709,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by cmor $as_me 3.15.0, which was
+It was created by cmor $as_me 3.15.1, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -5881,7 +5881,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by cmor $as_me 3.15.0, which was
+This file was extended by cmor $as_me 3.15.1, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -5936,7 +5936,7 @@ ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-cmor config.status 3.15.0
+cmor config.status 3.15.1
 configured by $0, generated by GNU Autoconf 2.72,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index 60389723..668cf675 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@ dnl
 dnl Process this file with autoconf to produce a configure script.
 
 dnl AC_PREREQ([2.71])
-AC_INIT([cmor],[3.15.0],[mauzey1@llnl.gov])
+AC_INIT([cmor],[3.15.1],[mauzey1@llnl.gov])
 
 GIT_TAG=`cd $srcdir ; git log -n 1 --pretty="format:%H"`
 
diff --git a/include/cmor.h b/include/cmor.h
index e285d92d..6368a52f 100644
--- a/include/cmor.h
+++ b/include/cmor.h
@@ -3,7 +3,7 @@
 
 #define CMOR_VERSION_MAJOR 3
 #define CMOR_VERSION_MINOR 15
-#define CMOR_VERSION_PATCH 0
+#define CMOR_VERSION_PATCH 1
 #define CMOR_CF_VERSION_MAJOR 1
 #define CMOR_CF_VERSION_MINOR 7