diff --git a/.gitignore b/.gitignore
index 3f90044..fa0ce00 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,3 +30,5 @@ php-7.*.xz.asc
 /php-8.1.7RC1.tar.xz.asc
 /php-8.1.7.tar.xz
 /php-8.1.7.tar.xz.asc
+/php-8.1.8RC1.tar.xz
+/php-8.1.8RC1.tar.xz.asc
diff --git a/php-mbstring.patch b/php-mbstring.patch
deleted file mode 100644
index 7da512b..0000000
--- a/php-mbstring.patch
+++ /dev/null
@@ -1,33 +0,0 @@
-From 2eb2f9d74f22bf35a4915ec95afc53a47ebf1af9 Mon Sep 17 00:00:00 2001
-From: Remi Collet <remi@remirepo.net>
-Date: Thu, 2 Jun 2022 08:05:22 +0200
-Subject: [PATCH] Fix GH-8685 mbstring requires pcre
-
----
- ext/mbstring/mbstring.c | 11 ++++++++++-
- 1 file changed, 10 insertions(+), 1 deletion(-)
-
-diff --git a/ext/mbstring/mbstring.c b/ext/mbstring/mbstring.c
-index 48f22a682a19..4a4088aed3fb 100644
---- a/ext/mbstring/mbstring.c
-+++ b/ext/mbstring/mbstring.c
-@@ -161,9 +161,18 @@ static const php_mb_nls_ident_list php_mb_default_identify_list[] = {
- 
- /* }}} */
- 
-+/* {{{ mbstring_deps[] */
-+static const zend_module_dep mbstring_deps[] = {
-+	ZEND_MOD_REQUIRED("pcre")
-+	ZEND_MOD_END
-+};
-+/* }}} */
-+
- /* {{{ zend_module_entry mbstring_module_entry */
- zend_module_entry mbstring_module_entry = {
--	STANDARD_MODULE_HEADER,
-+	STANDARD_MODULE_HEADER_EX,
-+	NULL,
-+	mbstring_deps,
- 	"mbstring",
- 	ext_functions,
- 	PHP_MINIT(mbstring),
diff --git a/php.spec b/php.spec
index 9bbab6b..cf618dd 100644
--- a/php.spec
+++ b/php.spec
@@ -64,8 +64,8 @@
 %bcond_with      imap
 %bcond_without   lmdb
 
-%global upver        8.1.7
-#global rcver        RC1
+%global upver        8.1.8
+%global rcver        RC1
 
 Summary: PHP scripting language for creating dynamic web sites
 Name: php
@@ -121,7 +121,6 @@ Patch45: php-7.4.0-ldap_r.patch
 Patch47: php-8.1.0-phpinfo.patch
 
 # Upstream fixes (100+)
-Patch100: php-mbstring.patch
 
 # Security fixes (200+)
 
@@ -722,7 +721,6 @@ in pure PHP.
 %patch47 -p1 -b .phpinfo
 
 # upstream patches
-%patch100 -p1 -b .up
 
 # security patches
 
@@ -1542,6 +1540,9 @@ systemctl try-restart php-fpm.service >/dev/null 2>&1 || :
 
 
 %changelog
+* Tue Jun 21 2022 Remi Collet <remi@remirepo.net> - 8.1.8~RC1-1
+- update to 8.1.8RC1
+
 * Wed Jun  8 2022 Remi Collet <remi@remirepo.net> - 8.1.7-1
 - Update to 8.1.7 - http://www.php.net/releases/8_1_7.php
 - add upstream patch to initialize pcre before mbstring
diff --git a/sources b/sources
index bc783e3..def6d80 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (php-8.1.7.tar.xz) = 1d72db220f3485310e02b67c41dd6434c26b7118f673ba7f425ff6b79cc96c86fc45bfe9c90b302d719eb9b7a5334f363a92ac309c367aacc93ab31a72a63c45
-SHA512 (php-8.1.7.tar.xz.asc) = 9c34d74718261ed2a3375bb06a1e4d68b71d091c12558868bd0ab0325a5046e88af0b8a09fc4035169d681f98b14e108c04ea24053d7d80ca4a0cee5510054fa
+SHA512 (php-8.1.8RC1.tar.xz) = 11a9c4c144a0f7707bc280335b82e8c6cd21d70f846aa7c3a3b3ad8b0dad05b2e3942f7cc2e2e983464819a83ecfc5cb7d7201fcb0b015c60ee48b3a5a178fe7
+SHA512 (php-8.1.8RC1.tar.xz.asc) = 8c9fbedbb4c09368c70ab2bdaa444e4502438b349373df5cea0b324fd41bfa03d21b3dc85d0bf809800eb27c21b6064e1ef3da13da0344d75da3adcf266bf491