diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 1b3820c..d025d52 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -38,6 +38,7 @@
 -  Fixed a bug (#4863) - :doc:`HTML Table Library <libraries/table>` method ``set_caption()`` was missing method chaining support.
 -  Fixed a bug (#4843) - :doc:`XML-RPC Library <libraries/xmlrpc>` client class didn't set a read/write socket timeout.
 -  Fixed a bug (#4865) - uncaught exceptions didn't set the HTTP Response status code to 500 unless ``display_errors`` was turned On.
+-  Fixed a bug (#4830) - :doc:`Session Library <libraries/sessions>` didn't take into account the new session INI settings in PHP 7.1.
 
 Version 3.1.0
 =============
diff --git a/user_guide_src/source/libraries/sessions.rst b/user_guide_src/source/libraries/sessions.rst
index 082828c..a95cd5a 100644
--- a/user_guide_src/source/libraries/sessions.rst
+++ b/user_guide_src/source/libraries/sessions.rst
@@ -594,7 +594,7 @@
 For MySQL::
 
 	CREATE TABLE IF NOT EXISTS `ci_sessions` (
-		`id` varchar(40) NOT NULL,
+		`id` varchar(128) NOT NULL,
 		`ip_address` varchar(45) NOT NULL,
 		`timestamp` int(10) unsigned DEFAULT 0 NOT NULL,
 		`data` blob NOT NULL,
@@ -604,7 +604,7 @@
 For PostgreSQL::
 
 	CREATE TABLE "ci_sessions" (
-		"id" varchar(40) NOT NULL,
+		"id" varchar(128) NOT NULL,
 		"ip_address" varchar(45) NOT NULL,
 		"timestamp" bigint DEFAULT 0 NOT NULL,
 		"data" text DEFAULT '' NOT NULL