diff --git a/dist/klipse_plugin.js b/dist/klipse_plugin.js
index 7e911c9d..2a9fd09a 100644
--- a/dist/klipse_plugin.js
+++ b/dist/klipse_plugin.js
@@ -8788,7 +8788,7 @@ gadjett.core_fn.sort_history=function(a){return cljs.core.sort_by.cljs$core$IFn$
 gadjett.core_fn.the_history=function(a){for(var b=[],c=arguments.length,d=0;;)if(d<c)b.push(arguments[d]),d+=1;else break;switch(b.length){case 1:return gadjett.core_fn.the_history.cljs$core$IFn$_invoke$arity$1(arguments[0]);case 0:return gadjett.core_fn.the_history.cljs$core$IFn$_invoke$arity$0();default:throw Error([cljs.core.str("Invalid arity: "),cljs.core.str(b.length)].join(""));}};
 gadjett.core_fn.the_history.cljs$core$IFn$_invoke$arity$1=function(a){return cljs.core.get.cljs$core$IFn$_invoke$arity$2(cljs.core.deref.cljs$core$IFn$_invoke$arity$1?cljs.core.deref.cljs$core$IFn$_invoke$arity$1(gadjett.core_fn.history):cljs.core.deref.call(null,gadjett.core_fn.history),a)};
 gadjett.core_fn.the_history.cljs$core$IFn$_invoke$arity$0=function(){return gadjett.core_fn.sort_history(cljs.core.deref.cljs$core$IFn$_invoke$arity$1?cljs.core.deref.cljs$core$IFn$_invoke$arity$1(gadjett.core_fn.history):cljs.core.deref.call(null,gadjett.core_fn.history))};gadjett.core_fn.the_history.cljs$lang$maxFixedArity=1;
-gadjett.core_fn.function_call_err_msg=function(a,b){return[cljs.core.str(a),cljs.core.str(" was called too much over the last "),cljs.core.str(cljs.core.cst$kw$timeslot_DASH_function_DASH_calls_DASH_msec.cljs$core$IFn$_invoke$arity$1(gadjett.core_fn.settings)),cljs.core.str(" msec: "),cljs.core.str(a)].join("")};var klipse={core:{}};cljs.core.enable_console_print_BANG_();gadjett.core_fn.settings_BANG_.cljs$core$IFn$_invoke$arity$variadic(cljs.core.array_seq([cljs.core.cst$kw$max_DASH_function_DASH_calls,100],0));klipse.core.version="4.2.0";console.info("Klipse ",klipse.core.version);console.info("Clojurescript ",cljs.core._STAR_clojurescript_version_STAR_);cljs.core.async={};cljs.core.async.impl={};cljs.core.async.impl.protocols={};cljs.core.async.impl.protocols.MAX_QUEUE_SIZE=1024;cljs.core.async.impl.protocols.ReadPort=function(){};
+gadjett.core_fn.function_call_err_msg=function(a,b){return[cljs.core.str(a),cljs.core.str(" was called too much over the last "),cljs.core.str(cljs.core.cst$kw$timeslot_DASH_function_DASH_calls_DASH_msec.cljs$core$IFn$_invoke$arity$1(gadjett.core_fn.settings)),cljs.core.str(" msec: "),cljs.core.str(a)].join("")};var klipse={core:{}};cljs.core.enable_console_print_BANG_();gadjett.core_fn.settings_BANG_.cljs$core$IFn$_invoke$arity$variadic(cljs.core.array_seq([cljs.core.cst$kw$max_DASH_function_DASH_calls,100],0));klipse.core.version="4.2.1";console.info("Klipse ",klipse.core.version);console.info("Clojurescript ",cljs.core._STAR_clojurescript_version_STAR_);cljs.core.async={};cljs.core.async.impl={};cljs.core.async.impl.protocols={};cljs.core.async.impl.protocols.MAX_QUEUE_SIZE=1024;cljs.core.async.impl.protocols.ReadPort=function(){};
 cljs.core.async.impl.protocols.take_BANG_=function(a,b){if(null!=a&&null!=a.cljs$core$async$impl$protocols$ReadPort$take_BANG_$arity$2)return a.cljs$core$async$impl$protocols$ReadPort$take_BANG_$arity$2(a,b);var c=cljs.core.async.impl.protocols.take_BANG_[goog.typeOf(null==a?null:a)];if(null!=c)return c.cljs$core$IFn$_invoke$arity$2?c.cljs$core$IFn$_invoke$arity$2(a,b):c.call(null,a,b);c=cljs.core.async.impl.protocols.take_BANG_._;if(null!=c)return c.cljs$core$IFn$_invoke$arity$2?c.cljs$core$IFn$_invoke$arity$2(a,
 b):c.call(null,a,b);throw cljs.core.missing_protocol("ReadPort.take!",a);};cljs.core.async.impl.protocols.WritePort=function(){};
 cljs.core.async.impl.protocols.put_BANG_=function(a,b,c){if(null!=a&&null!=a.cljs$core$async$impl$protocols$WritePort$put_BANG_$arity$3)return a.cljs$core$async$impl$protocols$WritePort$put_BANG_$arity$3(a,b,c);var d=cljs.core.async.impl.protocols.put_BANG_[goog.typeOf(null==a?null:a)];if(null!=d)return d.cljs$core$IFn$_invoke$arity$3?d.cljs$core$IFn$_invoke$arity$3(a,b,c):d.call(null,a,b,c);d=cljs.core.async.impl.protocols.put_BANG_._;if(null!=d)return d.cljs$core$IFn$_invoke$arity$3?d.cljs$core$IFn$_invoke$arity$3(a,
@@ -10861,7 +10861,7 @@ g[10]=k;g[11]=q;cljs.core.async.impl.ioc_helpers.process_exception(g);return clj
 g[2]=k,cljs.core.async.impl.ioc_helpers.process_exception(g),cljs.core.cst$kw$recur):5===h?(g[2]=null,g[1]=10,cljs.core.cst$kw$recur):10===h?(r=g[12],n=g[8],p=g[9],l=g[7],m=cljs.core.async.impl.ioc_helpers.add_exception_frame(g,9,cljs.core.cst$kw$default,null,8),k=function(){return function(a,b,c,d,e,f,g,h,k,l,m,n,p,q,r,t){return function(){var a=function(a){cljs.core.async.put_BANG_.cljs$core$IFn$_invoke$arity$2(p,clojure.string.join.cljs$core$IFn$_invoke$arity$2(" ",a));return cljs.core.async.put_BANG_.cljs$core$IFn$_invoke$arity$2(p,
 "\n")},b=function(b){var c=null;if(0<arguments.length){for(var c=0,d=Array(arguments.length-0);c<d.length;)d[c]=arguments[c+0],++c;c=new cljs.core.IndexedSeq(d,0)}return a.call(this,c)};b.cljs$lang$maxFixedArity=0;b.cljs$lang$applyTo=function(b){b=cljs.core.seq(b);return a(b)};b.cljs$core$IFn$_invoke$arity$variadic=a;return b}()}(r,l,p,n,console.log,r,n,p,l,m,h,b,c,d,e,f)}(),k=console.log=k,g[13]=k,g[2]=null,g[1]=13,cljs.core.cst$kw$recur):8===h?(g[2]=g[2],g[1]=7,cljs.core.cst$kw$recur):null}}(b,
 c,d,e,f),b,c,d,e,f)}(),h=function(){var a=g.cljs$core$IFn$_invoke$arity$0?g.cljs$core$IFn$_invoke$arity$0():g.call(null);a[cljs.core.async.impl.ioc_helpers.USER_START_IDX]=b;return a}();return cljs.core.async.impl.ioc_helpers.run_state_machine_wrapped(h)}}(f,e,b,c,d));return e};
-klipse.lang.javascript.opts=new cljs.core.PersistentArrayMap(null,5,[cljs.core.cst$kw$editor_DASH_in_DASH_mode,"javascript",cljs.core.cst$kw$editor_DASH_out_DASH_mode,"javascript",cljs.core.cst$kw$eval_DASH_fn,klipse.lang.javascript.str_eval_js_async,cljs.core.cst$kw$external_DASH_scripts,new cljs.core.PersistentVector(null,1,5,cljs.core.PersistentVector.EMPTY_NODE,["http://viebel.github.io/klipse/repo/js/pretty_format.js"],null),cljs.core.cst$kw$comment_DASH_str,"//"],null);
+klipse.lang.javascript.opts=new cljs.core.PersistentArrayMap(null,5,[cljs.core.cst$kw$editor_DASH_in_DASH_mode,"javascript",cljs.core.cst$kw$editor_DASH_out_DASH_mode,"javascript",cljs.core.cst$kw$eval_DASH_fn,klipse.lang.javascript.str_eval_js_async,cljs.core.cst$kw$external_DASH_scripts,new cljs.core.PersistentVector(null,1,5,cljs.core.PersistentVector.EMPTY_NODE,["https://viebel.github.io/klipse/repo/js/pretty_format.js"],null),cljs.core.cst$kw$comment_DASH_str,"//"],null);
 klipse.common.registry.register_mode("eval-javascript","selector_eval_js",klipse.lang.javascript.opts);cljs.tools={};cljs.tools.reader={};cljs.tools.reader.impl={};cljs.tools.reader.impl.utils={};cljs.tools.reader.impl.utils.char$=function(a){return null==a?null:cljs.core.char$(a)};cljs.tools.reader.impl.utils.ex_info_QMARK_=function(a){return a instanceof cljs.core.ExceptionInfo};
 cljs.tools.reader.impl.utils.ReaderConditional=function(a,b,c,d,e){this.splicing_QMARK_=a;this.form=b;this.__meta=c;this.__extmap=d;this.__hash=e;this.cljs$lang$protocol_mask$partition0$=2229667594;this.cljs$lang$protocol_mask$partition1$=8192};cljs.tools.reader.impl.utils.ReaderConditional.prototype.cljs$core$ILookup$_lookup$arity$2=function(a,b){return cljs.core._lookup.cljs$core$IFn$_invoke$arity$3(this,b,null)};
 cljs.tools.reader.impl.utils.ReaderConditional.prototype.cljs$core$ILookup$_lookup$arity$3=function(a,b,c){switch(b instanceof cljs.core.Keyword?b.fqn:null){case "splicing?":return this.splicing_QMARK_;case "form":return this.form;default:return cljs.core.get.cljs$core$IFn$_invoke$arity$3(this.__extmap,b,c)}};
diff --git a/dist/klipse_plugin.min.js b/dist/klipse_plugin.min.js
index 87abe75d..dafa6d6a 100644
--- a/dist/klipse_plugin.min.js
+++ b/dist/klipse_plugin.min.js
@@ -17032,7 +17032,7 @@ if ("undefined" === typeof Xo) {
   a.B = b;
   return a;
 }(), Yo = N([pl, 100], 0), Zo = null != Yo && (Yo.w & 64 || p === Yo.P) ? Sf(mg, Yo) : Yo, Xo = yi.B(N([Xo, Zo], 0));
-console.info("Klipse ", "4.2.0");
+console.info("Klipse ", "4.2.1");
 console.info("Clojurescript ", "1.9.293");
 var $o, ap, bp, cp = function cp(b, c) {
   if (null != b && null != b.Ce) {
@@ -26126,7 +26126,7 @@ xq("eval-javascript", "selector_eval_js", new q(null, 5, [Qm, "javascript", xk,
     };
   }(f, e, b, c, d));
   return e;
-}, Zm, new R(null, 1, 5, T, ["http://viebel.github.io/klipse/repo/js/pretty_format.js"], null), Cl, "//"], null));
+}, Zm, new R(null, 1, 5, T, ["https://viebel.github.io/klipse/repo/js/pretty_format.js"], null), Cl, "//"], null));
 xq("eval-markdown", "selector_eval_markdown", new q(null, 4, [Qm, "markdown", xk, "htmlmixed", Fn, function(a) {
   var b = gq(1);
   Fp(function(b) {
diff --git a/project.clj b/project.clj
index 7f7102da..c043469b 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject klipse "4.2.0"
+(defproject klipse "4.2.1"
   :description "Cljs compiler in cljs"
   :dependencies [[org.clojure/clojure "1.8.0"]
                  [org.clojure/clojurescript "1.9.293"]
diff --git a/resources/public/index-dev.html b/resources/public/index-dev.html
index 07a7347d..25f67ce8 100644
--- a/resources/public/index-dev.html
+++ b/resources/public/index-dev.html
@@ -16,7 +16,7 @@
         </div>
         <div id="compiler" style="height: 100%;"></div>
         <script async defer id="github-bjs" src="https://buttons.github.io/buttons.js"></script>
-        <script src="dev/js/klipse.js?version=4.2.0"></script>
+        <script src="dev/js/klipse.js?version=4.2.1"></script>
         <script>
           (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
                 (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
diff --git a/src/klipse/core.cljs b/src/klipse/core.cljs
index 23c26a8a..9546556a 100644
--- a/src/klipse/core.cljs
+++ b/src/klipse/core.cljs
@@ -5,7 +5,7 @@
 (enable-console-print!)
 (gadjett/settings! :max-function-calls 100)
 
-(def version "4.2.0")
+(def version "4.2.1")
 (js/console.info "Klipse " version)
 (js/console.info "Clojurescript " *clojurescript-version*)
 
diff --git a/src/klipse/lang/javascript.cljs b/src/klipse/lang/javascript.cljs
index 8165860d..672ddcb3 100644
--- a/src/klipse/lang/javascript.cljs
+++ b/src/klipse/lang/javascript.cljs
@@ -53,7 +53,7 @@
 (def opts {:editor-in-mode "javascript"
            :editor-out-mode "javascript"
            :eval-fn str-eval-js-async
-           :external-scripts ["http://viebel.github.io/klipse/repo/js/pretty_format.js"]
+           :external-scripts ["https://viebel.github.io/klipse/repo/js/pretty_format.js"]
            :comment-str "//"})
 
 (register-mode "eval-javascript" "selector_eval_js" opts)