diff --git a/monitoring-plugins-1.4.6-no_chown.patch b/monitoring-plugins-1.4.6-no_chown.patch
index 5a00a2e..fbc5a0f 100644
--- a/monitoring-plugins-1.4.6-no_chown.patch
+++ b/monitoring-plugins-1.4.6-no_chown.patch
@@ -1,7 +1,7 @@
-Index: monitoring-plugins-2.2/plugins-root/Makefile.am
+Index: monitoring-plugins-2.3.1/plugins-root/Makefile.am
 ===================================================================
---- monitoring-plugins-2.2.orig/plugins-root/Makefile.am
-+++ monitoring-plugins-2.2/plugins-root/Makefile.am
+--- monitoring-plugins-2.3.1.orig/plugins-root/Makefile.am
++++ monitoring-plugins-2.3.1/plugins-root/Makefile.am
 @@ -47,7 +47,6 @@ INSTALL_SUID = \
  	echo " $(INSTALL_PROGRAM) $$p $(DESTDIR)$(libexecdir)/$$p"; \
  	$(INSTALL_PROGRAM) $$p $(DESTDIR)$(libexecdir)/$$p; \
@@ -16,10 +16,10 @@ Index: monitoring-plugins-2.2/plugins-root/Makefile.am
  	rm -f $$TMPFILE; \
 -	if test $$can_create_suid_root_executable = yes; then \
 -	  $(INSTALL_SUID); \
-+	$(INSTALL_SUID); \
-+	if test $$can_create_suid_root_executable != yes; then \
 -	else \
 -	  echo "WARNING: insufficient access; not installing setuid plugins"; \
++	$(INSTALL_SUID); \
++	if test $$can_create_suid_root_executable != yes; then \
 +	  echo "WARNING: insufficient access; not installing plugins as setuid"; \
  	  echo "NOTE: to install setuid plugins, run 'make install-root' as root"; \
 +	  echo "NOTE: or fix this in your packaging (like the specfile)"; \
diff --git a/monitoring-plugins-2.1.1-check_logfile.patch b/monitoring-plugins-2.1.1-check_logfile.patch
index f9ae5eb..1a8a8ba 100644
--- a/monitoring-plugins-2.1.1-check_logfile.patch
+++ b/monitoring-plugins-2.1.1-check_logfile.patch
@@ -1,7 +1,7 @@
-Index: monitoring-plugins-2.2/plugins-scripts/check_log.sh
+Index: monitoring-plugins-2.3.1/plugins-scripts/check_log.sh
 ===================================================================
---- monitoring-plugins-2.2.orig/plugins-scripts/check_log.sh
-+++ monitoring-plugins-2.2/plugins-scripts/check_log.sh
+--- monitoring-plugins-2.3.1.orig/plugins-scripts/check_log.sh
++++ monitoring-plugins-2.3.1/plugins-scripts/check_log.sh
 @@ -115,27 +115,27 @@ while test -n "$1"; do
              exit $STATE_OK
              ;;
diff --git a/monitoring-plugins-2.2-mariadb_102_build_fix.patch b/monitoring-plugins-2.2-mariadb_102_build_fix.patch
index 6a81a87..816f4d2 100644
--- a/monitoring-plugins-2.2-mariadb_102_build_fix.patch
+++ b/monitoring-plugins-2.2-mariadb_102_build_fix.patch
@@ -30,11 +30,11 @@ Closes: https://github.com/monitoring-plugins/monitoring-plugins/issues/1508
  plugins/check_mysql_query.c | 8 ++++++--
  2 files changed, 12 insertions(+), 4 deletions(-)
 
-diff --git a/plugins/check_mysql.c b/plugins/check_mysql.c
-index 5773afd9..c44919d0 100644
---- a/plugins/check_mysql.c
-+++ b/plugins/check_mysql.c
-@@ -36,6 +36,10 @@ const char *email = "devel@monitoring-plugins.org";
+Index: monitoring-plugins-2.3.1/plugins/check_mysql.c
+===================================================================
+--- monitoring-plugins-2.3.1.orig/plugins/check_mysql.c
++++ monitoring-plugins-2.3.1/plugins/check_mysql.c
+@@ -36,6 +36,10 @@ const char *email = "devel@monitoring-pl
  
  #define SLAVERESULTSIZE 70
  
@@ -54,7 +54,7 @@ index 5773afd9..c44919d0 100644
  int check_slave = 0, warn_sec = 0, crit_sec = 0;
  int ignore_auth = 0;
  int verbose = 0;
-@@ -505,7 +509,7 @@ void
+@@ -508,7 +512,7 @@ void
  print_help (void)
  {
  	char *myport;
@@ -63,11 +63,11 @@ index 5773afd9..c44919d0 100644
  
  	print_revision (progname, NP_VERSION);
  
-diff --git a/plugins/check_mysql_query.c b/plugins/check_mysql_query.c
-index 49a14dd3..6f492442 100644
---- a/plugins/check_mysql_query.c
-+++ b/plugins/check_mysql_query.c
-@@ -33,6 +33,10 @@ const char *progname = "check_mysql_query";
+Index: monitoring-plugins-2.3.1/plugins/check_mysql_query.c
+===================================================================
+--- monitoring-plugins-2.3.1.orig/plugins/check_mysql_query.c
++++ monitoring-plugins-2.3.1/plugins/check_mysql_query.c
+@@ -33,6 +33,10 @@ const char *progname = "check_mysql_quer
  const char *copyright = "1999-2007";
  const char *email = "devel@monitoring-plugins.org";
  
@@ -96,4 +96,3 @@ index 49a14dd3..6f492442 100644
  
  	print_revision (progname, NP_VERSION);
  
-
diff --git a/monitoring-plugins-2.3-check_ntp_perf_absolute.patch b/monitoring-plugins-2.3-check_ntp_perf_absolute.patch
index 8f2a5c7..259ca68 100644
--- a/monitoring-plugins-2.3-check_ntp_perf_absolute.patch
+++ b/monitoring-plugins-2.3-check_ntp_perf_absolute.patch
@@ -1,6 +1,8 @@
---- monitoring-plugins-2.3~alpha.20200520T233014.cadac85e/plugins/check_ntp_time.c	2020/10/12 16:05:30	1.1
-+++ monitoring-plugins-2.3~alpha.20200520T233014.cadac85e/plugins/check_ntp_time.c	2020/10/12 16:07:13
-@@ -533,7 +533,7 @@
+Index: monitoring-plugins-2.3.1/plugins/check_ntp_time.c
+===================================================================
+--- monitoring-plugins-2.3.1.orig/plugins/check_ntp_time.c
++++ monitoring-plugins-2.3.1/plugins/check_ntp_time.c
+@@ -533,7 +533,7 @@ int process_arguments(int argc, char **a
  
  char *perfd_offset (double offset)
  {
diff --git a/monitoring-plugins-2.3.1.tar.gz b/monitoring-plugins-2.3.1.tar.gz
new file mode 100644
index 0000000..cc0f203
--- /dev/null
+++ b/monitoring-plugins-2.3.1.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f56eb84871983fd719247249e3532228b37e2efaae657a3979bd14ac1f84a35b
+size 2529669
diff --git a/monitoring-plugins-2.3.1.tar.gz.sha1 b/monitoring-plugins-2.3.1.tar.gz.sha1
new file mode 100644
index 0000000..abf5475
--- /dev/null
+++ b/monitoring-plugins-2.3.1.tar.gz.sha1
@@ -0,0 +1 @@
+8cb4d72920ed99ff922b6989fe5213ea76b9388e *monitoring-plugins-2.3.1.tar.gz
diff --git a/monitoring-plugins-2.3.tar.xz b/monitoring-plugins-2.3.tar.xz
deleted file mode 100644
index 6c6fc10..0000000
--- a/monitoring-plugins-2.3.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:6a13e493c96301f9a81b2ec90dc019e8d9f486d77f762883eb91df2345b10ab1
-size 1876784
diff --git a/monitoring-plugins-2.3~alpha.20200520T233014.cadac85e.obscpio b/monitoring-plugins-2.3~alpha.20200520T233014.cadac85e.obscpio
deleted file mode 100644
index 53b2b3a..0000000
--- a/monitoring-plugins-2.3~alpha.20200520T233014.cadac85e.obscpio
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:34e90e390323dc545d3b86664695b99d04d520db68dd5d5e89937b3375856350
-size 6768653
diff --git a/monitoring-plugins-2.3~alpha.20200520T233014.cadac85e.tar.xz b/monitoring-plugins-2.3~alpha.20200520T233014.cadac85e.tar.xz
deleted file mode 100644
index 4948e4e..0000000
--- a/monitoring-plugins-2.3~alpha.20200520T233014.cadac85e.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4d6d2a56cd2c638504263215c10d19ed1db3ef8746704741919bc8221c9c88b0
-size 1797632
diff --git a/monitoring-plugins-too_few_arguments_for_check_disk.patch b/monitoring-plugins-too_few_arguments_for_check_disk.patch
index e87b4c2..2bf4de6 100644
--- a/monitoring-plugins-too_few_arguments_for_check_disk.patch
+++ b/monitoring-plugins-too_few_arguments_for_check_disk.patch
@@ -1,8 +1,8 @@
-Index: monitoring-plugins-2.2/plugins/check_disk.c
+Index: monitoring-plugins-2.3.1/plugins/check_disk.c
 ===================================================================
---- monitoring-plugins-2.2.orig/plugins/check_disk.c
-+++ monitoring-plugins-2.2/plugins/check_disk.c
-@@ -997,7 +997,7 @@ get_stats (struct parameter_list *p, str
+--- monitoring-plugins-2.3.1.orig/plugins/check_disk.c
++++ monitoring-plugins-2.3.1/plugins/check_disk.c
+@@ -1030,7 +1030,7 @@ get_stats (struct parameter_list *p, str
          if (verbose >= 3)
            printf("Group %s: adding %llu blocks sized %llu, (%s) used_units=%g free_units=%g total_units=%g fsu_blocksize=%llu mult=%llu\n",
                   p_list->group, tmpfsp.fsu_bavail, tmpfsp.fsu_blocksize, p_list->best_match->me_mountdir, p_list->dused_units, p_list->dfree_units,
diff --git a/monitoring-plugins-wrong_return_in_check_swap.patch b/monitoring-plugins-wrong_return_in_check_swap.patch
index 76436ca..9fd9203 100644
--- a/monitoring-plugins-wrong_return_in_check_swap.patch
+++ b/monitoring-plugins-wrong_return_in_check_swap.patch
@@ -29,11 +29,11 @@ SWAP CRITICAL - 0% free (0 MB out of 0 MB) |swap=0MB;0;0;0;0
 Additional info:
 https://bugzilla.redhat.com/512559
 
-Index: monitoring-plugins-2.2/plugins/check_swap.c
+Index: monitoring-plugins-2.3.1/plugins/check_swap.c
 ===================================================================
---- monitoring-plugins-2.2.orig/plugins/check_swap.c
-+++ monitoring-plugins-2.2/plugins/check_swap.c
-@@ -125,7 +125,7 @@
+--- monitoring-plugins-2.3.1.orig/plugins/check_swap.c
++++ monitoring-plugins-2.3.1/plugins/check_swap.c
+@@ -125,7 +125,7 @@ main (int argc, char **argv)
  			free_swap_mb += dskfree_mb;
  			if (allswaps) {
  				if (dsktotal_mb == 0)
diff --git a/monitoring-plugins.changes b/monitoring-plugins.changes
index d675286..dd72100 100644
--- a/monitoring-plugins.changes
+++ b/monitoring-plugins.changes
@@ -1,3 +1,34 @@
+-------------------------------------------------------------------
+Wed Apr 21 07:47:25 UTC 2021 - Lars Vogdt <lars@linux-schulserver.de>
+
+- Update to 2.3.1:
+  Enhancements
+  * check_curl: Add an option to verify the peer certificate & host using the system CA's
+  Fixes
+  * check_icmp: fix simple typo, conspicuosly -> conspicuously
+  * check_curl: fixed help, usage and errors for TLS 1.3
+  * check_curl: fixed a potential buffer overflow in url buffer
+  * check_dns: split multiple IP addresses passed in one -a argument
+  * check_curl: added string_statuscode function for printing HTTP/1.1 and HTTP/2 correctly
+  * check_curl: fix crash if http header contains leading spaces
+  * check_curl: display a specific human-readable error message where possible
+  * check_pgsql: Using snprintf which honors the buffers size and guarantees null termination.
+  * check_snmp: put the "c" (to mark a counter) after the perfdata value
+  * check_http: Increase regexp limit
+  * check_http: make -C obvious
+  * check_curl: Increase regexp limit (to 1024 as in check_http)
+  * check_curl: make -C obvious (from check_http)
+- refreshed patches:
+  + monitoring-plugins-1.4.6-no_chown.patch
+  + monitoring-plugins-2.1.1-check_logfile.patch
+  + monitoring-plugins-2.2-mariadb_102_build_fix.patch
+  + monitoring-plugins-2.3-check_ntp_perf_absolute.patch
+  + monitoring-plugins-too_few_arguments_for_check_disk.patch
+  + monitoring-plugins-wrong_return_in_check_swap.patch
+  + monitoring-plugins.check_hpjd.c-64bit-portability-issue.patch
+  + monitoring-plugins.check_snmp.arrayaddress.patch
+- add sha1 checksum file as source
+
 -------------------------------------------------------------------
 Thu Jan 14 20:47:42 UTC 2021 - Lars Vogdt <lars@linux-schulserver.de>
 
diff --git a/monitoring-plugins.check_hpjd.c-64bit-portability-issue.patch b/monitoring-plugins.check_hpjd.c-64bit-portability-issue.patch
index 4e8a5ff..0693ac4 100644
--- a/monitoring-plugins.check_hpjd.c-64bit-portability-issue.patch
+++ b/monitoring-plugins.check_hpjd.c-64bit-portability-issue.patch
@@ -1,8 +1,8 @@
-Index: monitoring-plugins-2.2/plugins/check_hpjd.c
+Index: monitoring-plugins-2.3.1/plugins/check_hpjd.c
 ===================================================================
---- monitoring-plugins-2.2.orig/plugins/check_hpjd.c
-+++ monitoring-plugins-2.2/plugins/check_hpjd.c
-@@ -66,7 +66,7 @@
+--- monitoring-plugins-2.3.1.orig/plugins/check_hpjd.c
++++ monitoring-plugins-2.3.1/plugins/check_hpjd.c
+@@ -66,7 +66,7 @@ void print_usage (void);
  
  char *community = NULL;
  char *address = NULL;
diff --git a/monitoring-plugins.check_snmp.arrayaddress.patch b/monitoring-plugins.check_snmp.arrayaddress.patch
index 49bc2d4..705f11b 100644
--- a/monitoring-plugins.check_snmp.arrayaddress.patch
+++ b/monitoring-plugins.check_snmp.arrayaddress.patch
@@ -1,13 +1,13 @@
-Index: monitoring-plugins-2.2/plugins/check_snmp.c
+Index: monitoring-plugins-2.3.1/plugins/check_snmp.c
 ===================================================================
---- monitoring-plugins-2.2.orig/plugins/check_snmp.c
-+++ monitoring-plugins-2.2/plugins/check_snmp.c
-@@ -588,7 +588,7 @@ main (int argc, char **argv)
- 				strncat(perfstr, critical_thresholds, sizeof(perfstr)-strlen(perfstr)-1);
- 			}
+--- monitoring-plugins-2.3.1.orig/plugins/check_snmp.c
++++ monitoring-plugins-2.3.1/plugins/check_snmp.c
+@@ -576,7 +576,7 @@ main (int argc, char **argv)
+ 			len = sizeof(perfstr)-strlen(perfstr)-1;
+ 			strncat(perfstr, show, len>ptr-show ? ptr-show : len);
  
 -			if (type)
 +			if (type[0])
  				strncat(perfstr, type, sizeof(perfstr)-strlen(perfstr)-1);
- 			strncat(perfstr, " ", sizeof(perfstr)-strlen(perfstr)-1);
- 		}
+ 
+ 			if (warning_thresholds) {
diff --git a/monitoring-plugins.spec b/monitoring-plugins.spec
index 53eda7c..d9139b7 100644
--- a/monitoring-plugins.spec
+++ b/monitoring-plugins.spec
@@ -17,14 +17,15 @@
 
 
 Name:           monitoring-plugins
-Version:        2.3
+Version:        2.3.1
 Release:        0
 Summary:        The Monitoring Plug-Ins
 License:        GPL-2.0-or-later AND GPL-3.0-only
 Group:          System/Monitoring
 URL:            http://monitoring-plugins.org/
-Source0:        %{name}-%{version}.tar.xz
+Source0:        %{name}-%{version}.tar.gz
 Source1:        %{name}-rpmlintrc
+Source2:        %{name}-%{version}.tar.gz.sha1
 Source11:       %{name}-permissions
 Source12:       %{name}-README.SUSE
 Source13:       %{name}-README.SUSE-check_dhcp