diff --git a/dist/js/parsers/parser-input-select.min.js b/dist/js/parsers/parser-input-select.min.js
index 758fe94c..eda604f5 100644
--- a/dist/js/parsers/parser-input-select.min.js
+++ b/dist/js/parsers/parser-input-select.min.js
@@ -1,2 +1,2 @@
 /*! Parser: input & select - updated 11/22/2015 (v2.24.6) */
-!function(a){"use strict";var b=function(a,b,c){};a.tablesorter.addParser({id:"inputs",is:function(){return!1},format:function(b,c,d){var e=a(d).find("input");return e.length?e.val():b},parsed:!0,type:"text"}),a.tablesorter.addParser({id:"inputs-numeric",is:function(){return!1},format:function(b,c,d){var e=a(d).find("input"),f=e.length?e.val():b,g=a.tablesorter.formatFloat((f||"").replace(/[^\w,. \-()]/g,""),c);return b&&"number"==typeof g?g:b?a.trim(b&&c.config.ignoreCase?b.toLocaleLowerCase():b):b},parsed:!0,type:"numeric"}),a.tablesorter.addParser({id:"checkbox",is:function(){return!1},format:function(b,c,d,e){var f=a(d),g=f.closest("tr"),h=c.config.widgetOptions,i=c.config.checkboxClass||"checked",j=h.group_checkbox?h.group_checkbox:["checked","unchecked"],k=f.find('input[type="checkbox"]'),l=k.length?k[0].checked:"";return g.toggleClass(i+"-"+e,l),l?g.addClass(i):g.length&&!(g[0].className||"").match(i+"-")&&g.removeClass(i),k.length?j[l?0:1]:b},parsed:!0,type:"text"}),a.tablesorter.addParser({id:"select",is:function(){return!1},format:function(b,c,d){var e=a(d).find("select");return e.length?e.val():b},parsed:!0,type:"text"}),a.tablesorter.addParser({id:"select-text",is:function(){return!1},format:function(b,c,d){var e=a(d).find("select");return e.length?e.find("option:selected").text()||"":b},parsed:!0,type:"text"}),a.tablesorter.addParser({id:"textarea",is:function(){return!1},format:function(b,c,d){var e=a(d).find("textarea");return e.length?e.val():b},parsed:!0,type:"text"}),a(function(){a.fn.on&&a("table").on("tablesorter-initialized updateComplete",function(){this.tablesorterBusy=!1;var c=".parser-forms";a(this).children("tbody").off(c).on("mouseleave"+c,function(b){"TBODY"===b.target.nodeName&&a(":focus").blur()}).on("focus"+c,"select, input, textarea",function(){a(this).data("ts-original-value",this.value)}).on("blur"+c,"input, textarea",function(){this.value=a(this).data("ts-original-value")}).on("change keyup ".split(" ").join(c+" "),"select, input, textarea",function(c){if(27===c.which)return void(this.value=a(this).data("ts-original-value"));if("change"===c.type||"keyup"===c.type&&13===c.which&&("INPUT"===c.target.nodeName||"TEXTAREA"===c.target.nodeName&&c.altKey)){var d,e=a(c.target),f="checkbox"===c.target.type,g=e.closest("td"),h=g.closest("table"),i=g[0].cellIndex,j=h[0].config||!1,k=h.length&&h[0].tablesorterBusy,l=j&&j.$headerIndexed&&j.$headerIndexed[i]||[],m=f?c.target.checked:e.val();if(a.isEmptyObject(j)||k!==!1||l.length&&(l.hasClass("parser-false")||l.hasClass("sorter-false")&&l.hasClass("filter-false"))||"change"===c.type&&j.table.isUpdating)return;(j&&m!==e.data("ts-original-value")||f)&&(e.data("ts-original-value",m),h[0].tablesorterBusy=!0,a.tablesorter.updateCell(j,g,d,function(){b(c,h,e),h[0].tablesorterBusy=!1}))}}),a(this).children("thead").find('input[type="checkbox"]')&&a(this).off(c).on("tablesorter-ready"+c,function(){var b,c,d,e=a(this),f=e.length&&e[0].config;a.isEmptyObject(f)||(this.tablesorterBusy=!0,b=f&&f.checkboxClass||"checked",c=e.children("tbody").children(":visible"),d=c.length,a(this).children("thead").find('input[type="checkbox"]').each(function(){var e=a(this).closest("td, th").attr("data-column"),f=c.filter("."+b+"-"+e).length,g=f===d;0===f||g?(this.checked=g,this.indeterminate=!1):this.indeterminate=!0}),this.tablesorterBusy=!1)}).children("thead").off(c).on("change"+c,'input[type="checkbox"]',function(c){var d,e,f,g,h=a(this),i=h.closest("table"),j=i.length&&i[0].config,k=this.checked;return i.length&&j&&!i[0].tablesorterBusy&&(f=parseInt(h.closest("td, th").attr("data-column"),10),e=i.length&&j.checkboxVisible,i[0].tablesorterBusy=!0,g=i.children("tbody").children("tr"+("undefined"==typeof e||e===!0?":visible":"")).children(":nth-child("+(f+1)+")").find('input[type="checkbox"]').prop("checked",k),a.tablesorter.update(j,d,function(){b(c,i,g),i[0].tablesorterBusy=!1})),!1})})})}(jQuery);
\ No newline at end of file
+!function(a){"use strict";var b=function(a,b,c){};a.tablesorter.addParser({id:"inputs",is:function(){return!1},format:function(b,c,d){var e=a(d).find("input");return e.length?e.val():b},parsed:!0,type:"text"}),a.tablesorter.addParser({id:"inputs-numeric",is:function(){return!1},format:function(b,c,d){var e=a(d).find("input"),f=e.length?e.val():b,g=a.tablesorter.formatFloat((f||"").replace(/[^\w,. \-()]/g,""),c);return b&&"number"==typeof g?g:b?a.trim(b&&c.config.ignoreCase?b.toLocaleLowerCase():b):b},parsed:!0,type:"numeric"}),a.tablesorter.addParser({id:"checkbox",is:function(){return!1},format:function(b,c,d,e){var f=a(d),g=c.config.widgetOptions,h=g.group_checkbox?g.group_checkbox:["checked","unchecked"],i=f.find('input[type="checkbox"]'),j=i.length?i[0].checked:"";return i.length?h[j?0:1]:b},parsed:!0,type:"text"}),a.tablesorter.addParser({id:"select",is:function(){return!1},format:function(b,c,d){var e=a(d).find("select");return e.length?e.val():b},parsed:!0,type:"text"}),a.tablesorter.addParser({id:"select-text",is:function(){return!1},format:function(b,c,d){var e=a(d).find("select");return e.length?e.find("option:selected").text()||"":b},parsed:!0,type:"text"}),a.tablesorter.addParser({id:"textarea",is:function(){return!1},format:function(b,c,d){var e=a(d).find("textarea");return e.length?e.val():b},parsed:!0,type:"text"}),a(function(){if(a.fn.on){var c=function(a,b,c,d){a.toggleClass(b+"-"+c,d),(a[0].className||"").match(b+"-")?a.addClass(b):a.removeClass(b)},d=function(b,c){var d=b.children("tbody").children(":visible"),e=d.length;b.children("thead").find('input[type="checkbox"]').each(function(){var b=a(this).closest("td, th").attr("data-column"),f=d.filter("."+c+"-"+b).length,g=f===e;0===f||g?(this.checked=g,this.indeterminate=!1):this.indeterminate=!0})};a("table").on("tablesorter-initialized updateComplete",function(){this.tablesorterBusy=!1;var e=".parser-forms";a(this).children("tbody").off(e).on("mouseleave"+e,function(b){"TBODY"===b.target.nodeName&&a(":focus").blur()}).on("focus"+e,"select, input, textarea",function(){a(this).data("ts-original-value",this.value)}).on("blur"+e,"input, textarea",function(){this.value=a(this).data("ts-original-value")}).on("change keyup ".split(" ").join(e+" "),"select, input, textarea",function(e){if(27===e.which)return void(this.value=a(this).data("ts-original-value"));if("change"===e.type||"keyup"===e.type&&13===e.which&&("INPUT"===e.target.nodeName||"TEXTAREA"===e.target.nodeName&&e.altKey)){var f,g,h=a(e.target),i="checkbox"===e.target.type,j=h.closest("td"),k=j.closest("table"),l=j[0].cellIndex,m=k[0].config||!1,n=k.length&&k[0].tablesorterBusy,o=m&&m.$headerIndexed&&m.$headerIndexed[l]||[],p=i?e.target.checked:h.val();if(a.isEmptyObject(m)||n!==!1)return;if(i&&(g=m.checkboxClass||"checked",c(j.closest("tr"),g,l,p),d(k,g)),o.length&&(o.hasClass("parser-false")||o.hasClass("sorter-false")&&o.hasClass("filter-false"))||"change"===e.type&&m.table.isUpdating)return;(m&&p!==h.data("ts-original-value")||i)&&(h.data("ts-original-value",p),k[0].tablesorterBusy=!0,a.tablesorter.updateCell(m,j,f,function(){b(e,k,h),k[0].tablesorterBusy=!1}))}}),a(this).children("thead").find('input[type="checkbox"]')&&a(this).off(e).on("tablesorter-ready"+e,function(){var b,c=a(this),e=c.length&&c[0].config;a.isEmptyObject(e)||(this.tablesorterBusy=!0,b=e&&e.checkboxClass||"checked",d(c,b),this.tablesorterBusy=!1)}).children("thead").off(e).on("change"+e,'input[type="checkbox"]',function(e){var f,g,h,i,j,k,l,m=a(this),n=m.closest("table"),o=n.length&&n[0].config,p=this.checked;return n.length&&o&&!n[0].tablesorterBusy&&(h=parseInt(m.closest("td, th").attr("data-column"),10),j="checkbox"===o.parsers[h].id,g=n.length&&o.checkboxVisible,n[0].tablesorterBusy=!0,i=n.children("tbody").children("tr"+("undefined"==typeof g||g===!0?":visible":"")).children(":nth-child("+(h+1)+")").find('input[type="checkbox"]').prop("checked",p),j?a.tablesorter.update(o,f,function(){b(e,n,i),n[0].tablesorterBusy=!1}):(l=o.checkboxClass||"checked",i.each(function(){k=a(this).closest("tr"),c(a(this).closest("tr"),l,h,p)}),d(n,l),b(e,n,i),n[0].tablesorterBusy=!1)),!1})})}})}(jQuery);
\ No newline at end of file
diff --git a/js/parsers/parser-input-select.js b/js/parsers/parser-input-select.js
index bcddafa6..44d0288b 100644
--- a/js/parsers/parser-input-select.js
+++ b/js/parsers/parser-input-select.js
@@ -54,23 +54,12 @@
 		},
 		format : function( txt, table, cell, cellIndex ) {
 			var $cell = $( cell ),
-				$row = $cell.closest( 'tr' ),
 				wo = table.config.widgetOptions,
-				checkedClass = table.config.checkboxClass || 'checked',
 				// returning plain language here because this is what is shown in the
 				// group headers - change it as desired
 				status = wo.group_checkbox ? wo.group_checkbox : [ 'checked', 'unchecked' ],
 				$input = $cell.find( 'input[type="checkbox"]' ),
 				isChecked = $input.length ? $input[ 0 ].checked : '';
-			// adding class to row, indicating that a checkbox is checked; includes
-			// a column index in case more than one checkbox happens to be in a row
-			$row.toggleClass( checkedClass + '-' + cellIndex, isChecked );
-			if ( isChecked ) {
-				$row.addClass( checkedClass );
-			} else if ( $row.length && !( $row[0].className || '' ).match( checkedClass + '-' ) ) {
-				// don't remove checked class if other columns have a check
-				$row.removeClass( checkedClass );
-			}
 			return $input.length ? status[ isChecked ? 0 : 1 ] : txt;
 		},
 		parsed : true, // filter widget flag
@@ -127,6 +116,34 @@
 	// if this code interferes somehow, target the specific table $('#mytable'), instead of $('table')
 	$( function() {
 		if ( !$.fn.on ) { return; }
+		var toggleRowClass = function( $row, checkboxClass, indx, isChecked ) {
+			// adding class to row, indicating that a checkbox is checked; includes
+			// a column index in case more than one checkbox happens to be in a row
+			$row.toggleClass( checkboxClass + '-' + indx, isChecked );
+			// don't remove checked class if other columns have a check
+			if ( ( $row[0].className || '' ).match( checkboxClass + '-' ) ) {
+				$row.addClass( checkboxClass );
+			} else {
+				$row.removeClass( checkboxClass );
+			}
+		},
+		updateHeaderCheckbox = function( $table, checkboxClass ) {
+			var $rows = $table.children( 'tbody' ).children( ':visible' ), // (include child rows?)
+				len = $rows.length;
+			// set indeterminate state on header checkbox
+			$table.children( 'thead' ).find( 'input[type="checkbox"]' ).each( function() {
+				var column = $( this ).closest( 'td, th' ).attr( 'data-column' ),
+					vis = $rows.filter( '.' + checkboxClass + '-' + column ).length,
+					allChecked = vis === len;
+				if ( vis === 0 || allChecked ) {
+					this.checked = allChecked;
+					this.indeterminate = false;
+				} else {
+					this.indeterminate = true;
+				}
+			});
+		};
+
 		$( 'table' ).on( 'tablesorter-initialized updateComplete', function() {
 			this.tablesorterBusy = false;
 			var namespace = '.parser-forms';
@@ -159,7 +176,7 @@
 				if ( event.type === 'change' ||
 					( event.type === 'keyup' && event.which === 13 &&
 					( event.target.nodeName === 'INPUT' || event.target.nodeName === 'TEXTAREA' && event.altKey ) ) ) {
-					var undef,
+					var undef, checkboxClass,
 						$target = $( event.target ),
 						isCheckbox = event.target.type === 'checkbox',
 						$cell = $target.closest( 'td' ),
@@ -169,9 +186,18 @@
 						busy = $table.length && $table[ 0 ].tablesorterBusy,
 						$hdr = c && c.$headerIndexed && c.$headerIndexed[ indx ] || [],
 						val = isCheckbox ? event.target.checked : $target.val();
-					// abort if not a tablesorter table, or busy, or don't use updateCell if column is set
-					// to 'sorter-false' and 'filter-false', or column is set to 'parser-false'
-					if ( $.isEmptyObject( c ) || busy !== false || $hdr.length && ( $hdr.hasClass( 'parser-false' ) ||
+					// abort if not a tablesorter table, or busy
+					if ( $.isEmptyObject( c ) || busy !== false ) {
+						return;
+					}
+					if ( isCheckbox ) {
+						checkboxClass = c.checkboxClass || 'checked';
+						toggleRowClass( $cell.closest( 'tr' ), checkboxClass, indx, val );
+						updateHeaderCheckbox( $table, checkboxClass );
+					}
+					// don't use updateCell if column is set to 'sorter-false' and 'filter-false',
+					// or column is set to 'parser-false'
+					if ( $hdr.length && ( $hdr.hasClass( 'parser-false' ) ||
 						( $hdr.hasClass( 'sorter-false' ) && $hdr.hasClass( 'filter-false' ) ) ) ||
 						// table already updating; get out of here, we might be in an endless loop (in IE)! See #971
 						( event.type === 'change' && c.table.isUpdating ) ) {
@@ -201,20 +227,8 @@
 					if ( !$.isEmptyObject( c ) ) {
 						this.tablesorterBusy = true;
 						checkboxClass = c && c.checkboxClass || 'checked';
-						$rows = $table.children( 'tbody' ).children( ':visible' ); // (include child rows?)
-						len = $rows.length;
 						// set indeterminate state on header checkbox
-						$( this ).children( 'thead' ).find( 'input[type="checkbox"]' ).each( function() {
-							var column = $( this ).closest( 'td, th' ).attr( 'data-column' ),
-								vis = $rows.filter( '.' + checkboxClass + '-' + column ).length,
-								allChecked = vis === len;
-							if ( vis === 0 || allChecked ) {
-								this.checked = allChecked;
-								this.indeterminate = false;
-							} else {
-								this.indeterminate = true;
-							}
-						});
+						updateHeaderCheckbox( $table, checkboxClass );
 						this.tablesorterBusy = false;
 					}
 				})
@@ -222,13 +236,14 @@
 				.off( namespace )
 				// modified from http://jsfiddle.net/abkNM/6163/
 				.on( 'change' + namespace, 'input[type="checkbox"]', function( event ) {
-					var undef, onlyVisible, column, $target,
+					var undef, onlyVisible, column, $target, isParsed, $row, checkboxClass,
 						$checkbox = $( this ),
 						$table = $checkbox.closest( 'table' ),
 						c = $table.length && $table[ 0 ].config,
 						isChecked = this.checked;
 					if ( $table.length && c && !$table[ 0 ].tablesorterBusy ) {
 						column = parseInt( $checkbox.closest( 'td, th' ).attr( 'data-column' ), 10 );
+						isParsed = c.parsers[ column ].id === 'checkbox';
 						onlyVisible = $table.length && c.checkboxVisible;
 						$table[ 0 ].tablesorterBusy = true; // prevent "change" event from calling updateCell numerous times (see #971)
 						$target = $table
@@ -237,10 +252,23 @@
 							.children( ':nth-child(' + ( column + 1 ) + ')' )
 							.find( 'input[type="checkbox"]' )
 							.prop( 'checked', isChecked );
-						$.tablesorter.update( c, undef, function() {
+						if ( !isParsed ) {
+							// add checkbox class names
+							checkboxClass = c.checkboxClass || 'checked';
+							$target.each(function(){
+								$row = $(this).closest('tr');
+								toggleRowClass( $(this).closest( 'tr' ), checkboxClass, column, isChecked );
+							});
+							updateHeaderCheckbox( $table, checkboxClass );
 							updateServer( event, $table, $target );
 							$table[ 0 ].tablesorterBusy = false;
-						});
+						} else {
+							// only update cache if checkboxes are being sorted
+							$.tablesorter.update( c, undef, function() {
+								updateServer( event, $table, $target );
+								$table[ 0 ].tablesorterBusy = false;
+							});
+						}
 					}
 					// update already going on, don't do anything!
 					return false;