diff --git a/NEWS b/NEWS
index 9f2d213..1cb5781 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,7 @@
+0.53	2021-03-01
+
+	* Really fix FreeBSD capabilities/capsicum build.
+
 0.52	2021-02-28
 
 	* Fix GCC-10 build when used with `-Werror=format-overflow`
diff --git a/config.h.in b/config.h.in
index dfff307..b9f83f9 100644
--- a/config.h.in
+++ b/config.h.in
@@ -69,6 +69,9 @@
 /* Define to 1 if you have the <sys/capability.h> header file. */
 #undef HAVE_SYS_CAPABILITY_H
 
+/* Define to 1 if you have the <sys/capsicum.h> header file. */
+#undef HAVE_SYS_CAPSICUM_H
+
 /* Define to 1 if you have the <sys/stat.h> header file. */
 #undef HAVE_SYS_STAT_H
 
diff --git a/configure b/configure
index b29c70c..877b9db 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for procenv 0.52.
+# Generated by GNU Autoconf 2.69 for procenv 0.53.
 #
 # Report bugs to <jamesodhunt@gmail.com>.
 #
@@ -582,8 +582,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='procenv'
 PACKAGE_TARNAME='procenv'
-PACKAGE_VERSION='0.52'
-PACKAGE_STRING='procenv 0.52'
+PACKAGE_VERSION='0.53'
+PACKAGE_STRING='procenv 0.53'
 PACKAGE_BUGREPORT='jamesodhunt@gmail.com'
 PACKAGE_URL='https://github.com/jamesodhunt/procenv'
 
@@ -1326,7 +1326,7 @@ 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 procenv 0.52 to adapt to many kinds of systems.
+\`configure' configures procenv 0.53 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1397,7 +1397,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of procenv 0.52:";;
+     short | recursive ) echo "Configuration of procenv 0.53:";;
    esac
   cat <<\_ACEOF
 
@@ -1514,7 +1514,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-procenv configure 0.52
+procenv configure 0.53
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1939,7 +1939,7 @@ 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 procenv $as_me 0.52, which was
+It was created by procenv $as_me 0.53, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2324,7 +2324,7 @@ ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
 
 
 
-PROCENV_VERSION=0.52
+PROCENV_VERSION=0.53
 
 
 # Expand $ac_aux_dir to an absolute path.
@@ -5170,12 +5170,13 @@ if test "$ac_res" != no; then :
 
 fi
 
-for ac_header in sys/capability.h
+for ac_header in sys/capability.h sys/capsicum.h
 do :
-  ac_fn_c_check_header_mongrel "$LINENO" "sys/capability.h" "ac_cv_header_sys_capability_h" "$ac_includes_default"
-if test "x$ac_cv_header_sys_capability_h" = xyes; then :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
   cat >>confdefs.h <<_ACEOF
-#define HAVE_SYS_CAPABILITY_H 1
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
 
 fi
@@ -6012,7 +6013,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='procenv'
- VERSION='0.52'
+ VERSION='0.53'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -7015,7 +7016,7 @@ 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 procenv $as_me 0.52, which was
+This file was extended by procenv $as_me 0.53, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -7082,7 +7083,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-procenv config.status 0.52
+procenv config.status 0.53
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index b5e7aeb..2bc38aa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-m4_define([procenv_version], [0.52])
+m4_define([procenv_version], [0.53])
 
 AC_INIT(procenv,[procenv_version],[jamesodhunt@gmail.com],,[https://github.com/jamesodhunt/procenv])
 
diff --git a/procenv.spec b/procenv.spec
index 7a131c8..573d8b7 100644
--- a/procenv.spec
+++ b/procenv.spec
@@ -1,12 +1,12 @@
 Name:           procenv
-Version:        0.52
+Version:        0.53
 Release:        1%{?dist}
 Summary:        Utility to show process environment
 
 Group:          Applications/System
 License:        GPLv3+
 URL:            https://github.com/jamesodhunt/procenv
-Source0:        https://github.com/jamesodhunt/procenv/archive/0.52.tar.gz
+Source0:        https://github.com/jamesodhunt/procenv/archive/0.53.tar.gz
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 # fixme: should be autoconf >= 2.68, but Fedora packages or alien'ed dpkg