diff --git a/.gitignore b/.gitignore
index 9e3785b..59eeb5c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,4 @@ clog
 /apcu-5.1.12.tgz
 /apcu-5.1.13.tgz
 /apcu-5.1.14.tgz
+/apcu-5.1.15.tgz
diff --git a/apcu.ini b/apcu.ini
index 13df71c..ed8dd16 100644
--- a/apcu.ini
+++ b/apcu.ini
@@ -52,7 +52,7 @@ apc.mmap_file_mask=/tmp/apc.XXXXXX
 
 ;	Defines which serializer should be used
 ;	Default is the standard PHP serializer.
-;apc.serializer='default'
+;apc.serializer='php'
 
 ;	use the SAPI request start time for TTL
 ;apc.use_request_time=1
diff --git a/php-pecl-apcu.spec b/php-pecl-apcu.spec
index 0690c97..99452ec 100644
--- a/php-pecl-apcu.spec
+++ b/php-pecl-apcu.spec
@@ -16,7 +16,7 @@
 
 Name:           php-pecl-apcu
 Summary:        APC User Cache
-Version:        5.1.14
+Version:        5.1.15
 Release:        1%{?dist}
 Source0:        http://pecl.php.net/get/%{pecl_name}-%{version}.tgz
 Source1:        %{pecl_name}.ini
@@ -216,6 +216,9 @@ REPORT_EXIT_STATUS=1 \
 
 
 %changelog
+* Fri Dec  7 2018 Remi Collet <remi@remirepo.net> - 5.1.15-1
+- update to 5.1.15
+
 * Wed Nov 21 2018 Remi Collet <remi@remirepo.net> - 5.1.14-1
 - update to 5.1.14 (stable)
 
diff --git a/sources b/sources
index 2466ba8..8fc6619 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (apcu-5.1.14.tgz) = 68a39ae327ed1d75891b454e802e043b9bd5fe40a720537b342896dff87966db238bbc7d155fde87f69ea88607a38d88975eaa3292b1dbe1ed760b3a6a11dc85
+SHA512 (apcu-5.1.15.tgz) = c790f713babb22137fa80b0f33763c23c24fee0c41c31b22510867247e8193a013baae92c66b25c813cd1d9a52e56a0a6b67e8c781cda636225ade4cd902c521