diff --git a/build/fragments/version.txt b/build/fragments/version.txt
index 1fe61a0..99c8b64 100644
--- a/build/fragments/version.txt
+++ b/build/fragments/version.txt
@@ -1 +1 @@
-0.1.4-beta
\ No newline at end of file
+0.1.5-beta
\ No newline at end of file
diff --git a/build/output/intravenous-latest.debug.js b/build/output/intravenous-latest.debug.js
index 625a731..cf9b741 100644
--- a/build/output/intravenous-latest.debug.js
+++ b/build/output/intravenous-latest.debug.js
@@ -1,4 +1,4 @@
-// Intravenous JavaScript library v0.1.4-beta
+// Intravenous JavaScript library v0.1.5-beta
 // (c) Roy Jacobs
 // License: MIT (http://www.opensource.org/licenses/mit-license.php)
 
@@ -30,7 +30,7 @@ var exportSymbol = function(path, object) {
 var exportProperty = function(owner, publicName, object) {
   owner[publicName] = object;
 };
-intravenous.version = "0.1.4-beta";
+intravenous.version = "0.1.5-beta";
 exportSymbol('version', intravenous.version);
 (function() {
 	"use strict";
@@ -87,7 +87,7 @@ exportSymbol('version', intravenous.version);
 			cacheItem.tag = this.tag;
 
 			this.refCounts[cacheItem.tag] = this.refCounts[cacheItem.tag] || {};
-			this.refCounts[cacheItem.tag][cacheItem.registration.key] = this.refCounts[cacheItem.tag][cacheItem.registration.key]++ || 1;
+			this.refCounts[cacheItem.tag][cacheItem.registration.key] = this.refCounts[cacheItem.tag][cacheItem.registration.key]+1 || 1;
 		},
 
 		release: function(cacheItem) {
@@ -128,7 +128,7 @@ exportSymbol('version', intravenous.version);
 
 		set: function(cacheItem) {
 			this.cache.push(cacheItem);
-			this.refCounts[cacheItem.registration.key] = this.refCounts[cacheItem.registration.key]++ || 1;
+			this.refCounts[cacheItem.registration.key] = this.refCounts[cacheItem.registration.key]+1 || 1;
 		},
 
 		release: function(cacheItem) {
@@ -155,6 +155,7 @@ exportSymbol('version', intravenous.version);
 		},
 
 		release: function(cacheItem) {
+			delete this.cache[cacheItem];
 			return true;
 		},
 
@@ -425,6 +426,11 @@ exportSymbol('version', intravenous.version);
 					}
 				}
 			}
+
+			if (this.parent) {
+				var index = this.parent.children.indexOf(this);
+				this.parent.children.splice(index, 1);
+			}
 			return true;
 		},
 
diff --git a/build/output/intravenous-latest.js b/build/output/intravenous-latest.js
index c31998c..0bc3048 100644
--- a/build/output/intravenous-latest.js
+++ b/build/output/intravenous-latest.js
@@ -1,15 +1,15 @@
-// Intravenous JavaScript library v0.1.4-beta
+// Intravenous JavaScript library v0.1.5-beta
 // (c) Roy Jacobs
 // License: MIT (http://www.opensource.org/licenses/mit-license.php)
 
 (function(window,undefined){
-function r(k){function t(p,q){for(var l=p.split("."),n=k,m=0;m<l.length-1;m++)n=n[l[m]];n[l[l.length-1]]=q}k="undefined"!==typeof k?k:{};k.version="0.1.4-beta";t("version",k.version);(function(){function p(a,b,d){var c=q(a,b);b=c.key;for(var c=c.data,e,f=a;f&&!(e=f.h[b]);)f=f.parent;if(c&&c.p){var g=c.p(a,b,e);if(g.g)return g.data}if(!f)throw Error("Unknown dependency: "+b);if(c&&c.resolve&&(g=c.resolve(a,b,e),g.g))return g.data;if(c=a.b[e.j].get(b))return c;var h;if(e.value instanceof Function){c=
-e.value.$inject;h=[];if(c instanceof Array)for(f=0,g=c.length;f<g;f++)h.push(p(a,c[f],[]));c=function(){};c.prototype=e.value.prototype;c=new c;f=0;for(g=d.length;f<g;f++)h.push(d[f]);h=e.value.apply(c,h);if(h instanceof Function){c=new m(a,b);c.a.register(b,h);for(var k in h)h.hasOwnProperty(k)&&(c[k]=h[k]);h=void 0}}else c=e.value;a.b[e.j].set(new x(e,h||c));return h||c}function q(a,b){for(var d in a.q)for(var c=a.q[d],e=0,f=c.suffixes.length;e<f;e++){var g=c.suffixes[e];if(-1!==b.indexOf(g,b.length-
-g.length))return{data:c,key:b.slice(0,b.length-g.length)}}return{data:null,key:b}}function l(a,b){this.h={};this.parent=b;this.b={perRequest:new u(this),singleton:new v(this,b?b.b.singleton:null),unique:new w(this)};this.children=[];this.options=a=a||{};this.register("container",this);this.dispose=this.e;this.get=this.get;this.register=this.register}function n(a,b){this.a=a;this.key=b;this.dispose=this.e;this.get=this.get;this.use=this.i}function m(a,b){this.a=a.create();this.key=b;this.dispose=this.e;
-this.get=this.get;this.use=this.i}function w(a){this.a=a;this.cache=[]}function v(a,b){this.a=a;this.cache=[];this.d={};this.parent=b}function u(a){this.a=a;this.cache=[];this.d={};this.tag=0;this.m={};this.n=[]}function x(a,b){this.c=a;this.f=b}function y(a,b,d,c){this.key=a;this.a=b;this.value=d;this.j=c}u.prototype={get:function(a){for(var b=0,d=this.cache.length;b<d;b++){var c=this.cache[b];if(c.c.key===a&&c.tag===this.tag){if(!c.f)break;this.set(c);return c.f}}this.n.push(a);if(this.m[a])throw Error("Circular reference: "+
-this.n.join(" --\x3e "));this.m[a]=!0;return null},set:function(a){this.cache.push(a);a.tag=this.tag;this.d[a.tag]=this.d[a.tag]||{};this.d[a.tag][a.c.key]=this.d[a.tag][a.c.key]++||1},k:function(a){return!--this.d[a.tag][a.c.key]},l:function(){this.tag++;this.m={};this.n=[]}};v.prototype={get:function(a){for(var b=0,d=this.cache.length;b<d;b++){var c=this.cache[b];if(c.c.key===a){if(!c.f)break;this.set(c);return c.f}}return this.parent?this.parent.get(a):null},set:function(a){this.cache.push(a);
-this.d[a.c.key]=this.d[a.c.key]++||1},k:function(a){return!--this.d[a.c.key]},l:function(){}};w.prototype={get:function(){return null},set:function(a){this.cache.push(a)},k:function(){return!0},l:function(){}};m.prototype={get:function(){var a=Array.prototype.slice.call(arguments);a.unshift(this.key);a=this.a.get.apply(this.a,a);a.o=this;return a},i:function(a,b,d){this.a.register(a,b,d);return this},e:function(){this.a.e()}};n.prototype={get:function(){var a=new m(this.a,this.key);return a.get.apply(a,
-arguments)},i:function(a,b,d){return(new m(this.a,this.key)).i(a,b,d)},e:function(a){a.o.e();delete a.o}};l.prototype={q:{t:{suffixes:["?"],p:function(a,b,d){return d?{g:!1}:{g:!0,data:null}}},s:{suffixes:["Factory","!"],resolve:function(a,b){return{g:!0,data:new n(a,b)}}}},register:function(a,b,d){if(q(this,a).data)throw Error("Cannot register dependency: "+a);!d&&this.h[a]?this.h[a].value=b:this.h[a]=new y(a,this,b,d||"perRequest")},get:function(a){for(var b in this.b)this.b.hasOwnProperty(b)&&
-this.b[b].l(a);b=Array.prototype.slice.call(arguments).slice(1);for(var d=this,c;d&&null===(c=p(d,a,b));)d=d.parent;return c},e:function(){for(var a;a=this.children.pop();)a.e();for(var b=this.r();a=b.pop();)if(this.b[a.c.j].k(a)&&this.options.onDispose)this.options.onDispose(a.f,a.c.key);return!0},create:function(a){a=a||{};a.onDispose=a.onDispose||this.options.onDispose;a=new l(a,this);this.children.push(a);return a},r:function(){var a=[],b;for(b in this.b)this.b.hasOwnProperty(b)&&(a=a.concat(this.b[b].cache));
-return a}};k.create=function(a){return new l(a)};t("create",k.create)})()}"function"===typeof require&&"object"===typeof exports&&"object"===typeof module?r(module.exports||exports):"function"===typeof define&&define.amd?define(["exports"],r):r(window.intravenous={});!0;
+function r(k){function t(p,q){for(var l=p.split("."),n=k,m=0;m<l.length-1;m++)n=n[l[m]];n[l[l.length-1]]=q}k="undefined"!==typeof k?k:{};k.version="0.1.5-beta";t("version",k.version);(function(){function p(a,b,d){var c=q(a,b);b=c.key;for(var c=c.data,e,f=a;f&&!(e=f.i[b]);)f=f.parent;if(c&&c.u){var g=c.u(a,b,e);if(g.h)return g.data}if(!f)throw Error("Unknown dependency: "+b);if(c&&c.resolve&&(g=c.resolve(a,b,e),g.h))return g.data;if(c=a.b[e.j].get(b))return c;var h;if(e.value instanceof Function){c=
+e.value.$inject;h=[];if(c instanceof Array)for(f=0,g=c.length;f<g;f++)h.push(p(a,c[f],[]));c=function(){};c.prototype=e.value.prototype;c=new c;f=0;for(g=d.length;f<g;f++)h.push(d[f]);h=e.value.apply(c,h);if(h instanceof Function){c=new m(a,b);c.a.register(b,h);for(var k in h)h.hasOwnProperty(k)&&(c[k]=h[k]);h=void 0}}else c=e.value;a.b[e.j].set(new x(e,h||c));return h||c}function q(a,b){for(var d in a.v)for(var c=a.v[d],e=0,f=c.suffixes.length;e<f;e++){var g=c.suffixes[e];if(-1!==b.indexOf(g,b.length-
+g.length))return{data:c,key:b.slice(0,b.length-g.length)}}return{data:null,key:b}}function l(a,b){this.i={};this.parent=b;this.b={perRequest:new u(this),singleton:new v(this,b?b.b.singleton:null),unique:new w(this)};this.children=[];this.options=a=a||{};this.register("container",this);this.dispose=this.f;this.get=this.get;this.register=this.register}function n(a,b){this.a=a;this.key=b;this.dispose=this.f;this.get=this.get;this.use=this.use}function m(a,b){this.a=a.create();this.key=b;this.dispose=
+this.f;this.get=this.get;this.use=this.use}function w(a){this.a=a;this.cache=[]}function v(a,b){this.a=a;this.cache=[];this.c={};this.parent=b}function u(a){this.a=a;this.cache=[];this.c={};this.tag=0;this.m={};this.o=[]}function x(a,b){this.registration=a;this.g=b}function y(a,b,d,c){this.key=a;this.a=b;this.value=d;this.j=c}u.prototype={get:function(a){for(var b=0,d=this.cache.length;b<d;b++){var c=this.cache[b];if(c.registration.key===a&&c.tag===this.tag){if(!c.g)break;this.set(c);return c.g}}this.o.push(a);
+if(this.m[a])throw Error("Circular reference: "+this.o.join(" --\x3e "));this.m[a]=!0;return null},set:function(a){this.cache.push(a);a.tag=this.tag;this.c[a.tag]=this.c[a.tag]||{};this.c[a.tag][a.registration.key]=this.c[a.tag][a.registration.key]+1||1},release:function(a){return!--this.c[a.tag][a.registration.key]},l:function(){this.tag++;this.m={};this.o=[]}};v.prototype={get:function(a){for(var b=0,d=this.cache.length;b<d;b++){var c=this.cache[b];if(c.registration.key===a){if(!c.g)break;this.set(c);
+return c.g}}return this.parent?this.parent.get(a):null},set:function(a){this.cache.push(a);this.c[a.registration.key]=this.c[a.registration.key]+1||1},release:function(a){return!--this.c[a.registration.key]},l:function(){}};w.prototype={get:function(){return null},set:function(a){this.cache.push(a)},release:function(a){delete this.cache[a];return!0},l:function(){}};m.prototype={get:function(){var a=Array.prototype.slice.call(arguments);a.unshift(this.key);a=this.a.get.apply(this.a,a);a.s=this;return a},
+use:function(a,b,d){this.a.register(a,b,d);return this},f:function(){this.a.f()}};n.prototype={get:function(){var a=new m(this.a,this.key);return a.get.apply(a,arguments)},use:function(a,b,d){return(new m(this.a,this.key)).use(a,b,d)},f:function(a){a.s.f();delete a.s}};l.prototype={v:{B:{suffixes:["?"],u:function(a,b,d){return d?{h:!1}:{h:!0,data:null}}},A:{suffixes:["Factory","!"],resolve:function(a,b){return{h:!0,data:new n(a,b)}}}},register:function(a,b,d){if(q(this,a).data)throw Error("Cannot register dependency: "+
+a);!d&&this.i[a]?this.i[a].value=b:this.i[a]=new y(a,this,b,d||"perRequest")},get:function(a){for(var b in this.b)this.b.hasOwnProperty(b)&&this.b[b].l(a);b=Array.prototype.slice.call(arguments).slice(1);for(var d=this,c;d&&null===(c=p(d,a,b));)d=d.parent;return c},f:function(){for(var a;a=this.children.pop();)a.f();for(var b=this.w();a=b.pop();)if(this.b[a.registration.j].release(a)&&this.options.onDispose)this.options.onDispose(a.g,a.registration.key);this.parent&&this.parent.children.splice(this.parent.children.indexOf(this),
+1);return!0},create:function(a){a=a||{};a.onDispose=a.onDispose||this.options.onDispose;a=new l(a,this);this.children.push(a);return a},w:function(){var a=[],b;for(b in this.b)this.b.hasOwnProperty(b)&&(a=a.concat(this.b[b].cache));return a}};k.create=function(a){return new l(a)};t("create",k.create)})()}"function"===typeof require&&"object"===typeof exports&&"object"===typeof module?r(module.exports||exports):"function"===typeof define&&define.amd?define(["exports"],r):r(window.intravenous={});!0;
 })(typeof window !== "undefined" ? window : global);
diff --git a/spec/spec/factorySpecs.js b/spec/spec/factorySpecs.js
index 5cf67ec..d36a61a 100644
--- a/spec/spec/factorySpecs.js
+++ b/spec/spec/factorySpecs.js
@@ -21,6 +21,7 @@ describe("A factory", function() {
 
         this.b = function(aFactory) {
 			var _this = this;
+			this.aFactory = aFactory;
 			this.a = aFactory.get("extraParameter");
 			this.a2 = aFactory.use("dependency", "d2").get("extraParameter");
 
@@ -71,6 +72,11 @@ describe("A factory", function() {
 			it("should not have disposed the instance", function() {
 				expect(this.disposalCount.b).toBeUndefined();
 			});
+
+			it("should release the first container", function() {
+				expect(this.retrievedB.aFactory.container.children.length).toBe(1);
+				expect(this.retrievedB.aFactory.container.children[0]).toBe(this.retrievedB.a2.$containerFactoryInstance.container);
+			});
 		});
 
 		describe("and when disposed both factory instances", function() {
@@ -86,6 +92,10 @@ describe("A factory", function() {
 			it("should not have disposed the instance", function() {
 				expect(this.disposalCount.b).toBeUndefined();
 			});
+
+			it("should release both containers", function() {
+				expect(this.retrievedB.aFactory.container.children.length).toBe(0);
+			});
 		});
 	});
 })
diff --git a/src/container.js b/src/container.js
index 94075d2..182ecd5 100644
--- a/src/container.js
+++ b/src/container.js
@@ -53,7 +53,7 @@
 			cacheItem.tag = this.tag;
 
 			this.refCounts[cacheItem.tag] = this.refCounts[cacheItem.tag] || {};
-			this.refCounts[cacheItem.tag][cacheItem.registration.key] = this.refCounts[cacheItem.tag][cacheItem.registration.key]++ || 1;
+			this.refCounts[cacheItem.tag][cacheItem.registration.key] = this.refCounts[cacheItem.tag][cacheItem.registration.key]+1 || 1;
 		},
 
 		release: function(cacheItem) {
@@ -94,7 +94,7 @@
 
 		set: function(cacheItem) {
 			this.cache.push(cacheItem);
-			this.refCounts[cacheItem.registration.key] = this.refCounts[cacheItem.registration.key]++ || 1;
+			this.refCounts[cacheItem.registration.key] = this.refCounts[cacheItem.registration.key]+1 || 1;
 		},
 
 		release: function(cacheItem) {
@@ -121,6 +121,7 @@
 		},
 
 		release: function(cacheItem) {
+			delete this.cache[cacheItem];
 			return true;
 		},
 
@@ -391,6 +392,11 @@
 					}
 				}
 			}
+
+			if (this.parent) {
+				var index = this.parent.children.indexOf(this);
+				this.parent.children.splice(index, 1);
+			}
 			return true;
 		},