diff --git a/inst/www/react-tools/react-tools.js b/inst/www/react-tools/react-tools.js
index 87dc5ba..a0a6ffc 100644
--- a/inst/www/react-tools/react-tools.js
+++ b/inst/www/react-tools/react-tools.js
@@ -1 +1 @@
-(function(s,u){typeof exports=="object"&&typeof module<"u"?u(exports):typeof define=="function"&&define.amd?define(["exports"],u):(s=typeof globalThis<"u"?globalThis:s||self,u(s.reactR={}))})(this,function(s){"use strict";function u(n,t){if(typeof t=="string")return t;if(t.name[0]===t.name[0].toUpperCase()&&!n.hasOwnProperty(t.name))throw new Error("Unknown component: "+t.name);for(let i in t.attribs)g(t.attribs[i])&&(t.attribs[i]=u(n,t.attribs[i]));for(var a=n.hasOwnProperty(t.name)?n[t.name]:t.name,r=[a,t.attribs],e=0;e<t.children.length;e++)r.push(u(n,t.children[e]));return React.createElement.apply(React,r)}const d={widthProperty:"width",heightProperty:"height",appendPx:!1,renderOnResize:!1};function y(n){var t={};for(var a in d)t[a]=d[a];for(var a in n){if(!d.hasOwnProperty(a))throw new Error("Unrecognized option: "+a);t[a]=n[a]}return t}function o(n,t){if(!t.appendPx)return n}function g(n){return typeof n=="object"&&n.hasOwnProperty("name")&&n.hasOwnProperty("attribs")&&n.hasOwnProperty("children")}function b(n,t,a,r){var e=y(r);window.HTMLWidgets.widget({name:n,type:t,factory:function(i,c,l){var p,P={},h=function(f){e.renderOnResize&&(typeof f.tag=="object"&&(f.tag.attribs[e.widthProperty]=o(c),f.tag.attribs[e.heightProperty]=o(l)),p=f),this.instance.component=ReactDOM.render(u(a,f.tag),i)};return{instance:P,renderValue:h,resize:function(f,V){e.renderOnResize&&(c=f,l=V,h(p))}}}})}function O(n,{configuration:t,value:a}){let r=!1;t!==void 0&&(this.setInputConfiguration(n,t),r=!0),a!==void 0&&(this.setInputValue(n,a),r=!0),r&&(this.getCallback(n)(),this.render(n))}const m={receiveMessage:O,type:!1,ratePolicy:null};function w(n,t,a,r){r=Object.assign({},m,r),Shiny.inputBindings.register(new class extends Shiny.InputBinding{find(e){return $(e).find(n)}getValue(e){return this.getInputValue(e)}setValue(e,i,c=!1){$(e).data("callback")!==void 0&&(this.setInputValue(e,i),this.getCallback(e)(c),this.render(e))}initialize(e){$(e).data("value",JSON.parse($(e).next().text())),$(e).data("configuration",JSON.parse($(e).next().next().text()))}subscribe(e,i){$(e).data("callback",i),this.render(e)}unsubscribe(e){ReactDOM.render(null,e)}receiveMessage(e,i){r.receiveMessage.call(this,e,i)}getType(e){if(typeof r.type=="function")return r.type.call(this,e);if(r.type===!1||typeof r.type=="string")return r.type;throw new Error("options.type must be false, a string, or a function")}getRatePolicy(){return r.ratePolicy}getInputValue(e){return $(e).data("value")}setInputValue(e,i){$(e).data("value",i)}getInputConfiguration(e){return $(e).data("configuration")}setInputConfiguration(e,i){$(e).data("configuration",i)}getCallback(e){return $(e).data("callback")}render(e){const i=React.createElement(a,{configuration:this.getInputConfiguration(e),value:this.getValue(e),setValue:this.setValue.bind(this,e),el:e});ReactDOM.render(i,e)}},t)}s.hydrate=u,s.reactShinyInput=w,s.reactWidget=b,Object.defineProperty(s,Symbol.toStringTag,{value:"Module"})});
+(function(s,u){typeof exports=="object"&&typeof module<"u"?u(exports):typeof define=="function"&&define.amd?define(["exports"],u):(s=typeof globalThis<"u"?globalThis:s||self,u(s.reactR={}))})(this,function(s){"use strict";function u(t,n){if(typeof n=="string")return n;if(b(n))return null;if(n.name[0]===n.name[0].toUpperCase()&&!t.hasOwnProperty(n.name))throw new Error("Unknown component: "+n.name);for(let i in n.attribs)g(n.attribs[i])&&(n.attribs[i]=u(t,n.attribs[i]));for(var a=t.hasOwnProperty(n.name)?t[n.name]:n.name,r=[a,n.attribs],e=0;e<n.children.length;e++)r.push(u(t,n.children[e]));return React.createElement.apply(React,r)}const c={widthProperty:"width",heightProperty:"height",appendPx:!1,renderOnResize:!1};function y(t){var n={};for(var a in c)n[a]=c[a];for(var a in t){if(!c.hasOwnProperty(a))throw new Error("Unrecognized option: "+a);n[a]=t[a]}return n}function d(t,n){return n.appendPx?t+"px":t}function g(t){return typeof t=="object"&&t.hasOwnProperty("name")&&t.hasOwnProperty("attribs")&&t.hasOwnProperty("children")}function b(t){return typeof t=="object"&&t.hasOwnProperty("name")&&t.hasOwnProperty("version")&&t.hasOwnProperty("src")&&t.hasOwnProperty("script")}function O(t,n,a,r){var e=y(r);window.HTMLWidgets.widget({name:t,type:n,factory:function(i,o,p){var l,V={},h=function(f){e.renderOnResize&&(typeof f.tag=="object"&&(f.tag.attribs[e.widthProperty]=d(o),f.tag.attribs[e.heightProperty]=d(p)),l=f),this.instance.component=ReactDOM.render(u(a,f.tag),i)};return{instance:V,renderValue:h,resize:function(f,I){e.renderOnResize&&(o=f,p=I,h(l))}}}})}function w(t,{configuration:n,value:a}){let r=!1;n!==void 0&&(this.setInputConfiguration(t,n),r=!0),a!==void 0&&(this.setInputValue(t,a),r=!0),r&&(this.getCallback(t)(),this.render(t))}const P={receiveMessage:w,type:!1,ratePolicy:null};function m(t,n,a,r){r=Object.assign({},P,r),Shiny.inputBindings.register(new class extends Shiny.InputBinding{find(e){return $(e).find(t)}getValue(e){return this.getInputValue(e)}setValue(e,i,o=!1){$(e).data("callback")!==void 0&&(this.setInputValue(e,i),this.getCallback(e)(o),this.render(e))}initialize(e){$(e).data("value",JSON.parse($(e).next().text())),$(e).data("configuration",JSON.parse($(e).next().next().text()))}subscribe(e,i){$(e).data("callback",i),this.render(e)}unsubscribe(e){ReactDOM.render(null,e)}receiveMessage(e,i){r.receiveMessage.call(this,e,i)}getType(e){if(typeof r.type=="function")return r.type.call(this,e);if(r.type===!1||typeof r.type=="string")return r.type;throw new Error("options.type must be false, a string, or a function")}getRatePolicy(){return r.ratePolicy}getInputValue(e){return $(e).data("value")}setInputValue(e,i){$(e).data("value",i)}getInputConfiguration(e){return $(e).data("configuration")}setInputConfiguration(e,i){$(e).data("configuration",i)}getCallback(e){return $(e).data("callback")}render(e){const i=React.createElement(a,{configuration:this.getInputConfiguration(e),value:this.getValue(e),setValue:this.setValue.bind(this,e),el:e});ReactDOM.render(i,e)}},n)}s.hydrate=u,s.reactShinyInput=m,s.reactWidget=O,Object.defineProperty(s,Symbol.toStringTag,{value:"Module"})});
diff --git a/srcjs/widget.js b/srcjs/widget.js
index f8dd1f1..6add990 100644
--- a/srcjs/widget.js
+++ b/srcjs/widget.js
@@ -7,6 +7,7 @@
  */
 export function hydrate(components, tag) {
     if (typeof tag === 'string') return tag;
+    if (isDependency(tag)) return null;
     if (tag.name[0] === tag.name[0].toUpperCase()
         && !components.hasOwnProperty(tag.name)) {
         throw new Error("Unknown component: " + tag.name);
@@ -73,6 +74,14 @@ export function isTag(value) {
         && value.hasOwnProperty('children');
 }
 
+export function isDependency(value) {
+    return (typeof value === 'object')
+        && value.hasOwnProperty('name')
+        && value.hasOwnProperty('version')
+        && value.hasOwnProperty('src')
+        && value.hasOwnProperty('script');
+}
+
 /**
  * Creates an HTMLWidget that is updated by rendering a React component.
  * React component constructors are made available by specifying them by