diff --git a/pace.coffee b/pace.coffee
index 2f534e1d..f58e9cd1 100644
--- a/pace.coffee
+++ b/pace.coffee
@@ -419,7 +419,7 @@ class EventLagMonitor
       samples.push diff
 
       if samples.length > options.eventLag.sampleCount
-        samples.pop()
+        samples.shift()
 
       avg = avgAmplitude samples
 
diff --git a/pace.js b/pace.js
index 385e1060..c2247a80 100644
--- a/pace.js
+++ b/pace.js
@@ -537,7 +537,7 @@
         last = now();
         samples.push(diff);
         if (samples.length > options.eventLag.sampleCount) {
-          samples.pop();
+          samples.shift();
         }
         avg = avgAmplitude(samples);
         if (++points >= options.eventLag.minSamples && avg < options.eventLag.lagThreshold) {
diff --git a/pace.min.js b/pace.min.js
index 6580bf02..01b9b243 100644
--- a/pace.min.js
+++ b/pace.min.js
@@ -1,2 +1,2 @@
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+/*! pace 0.4.13 */
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0},null!=window.history.pushState&&(M=window.history.pushState,window.history.pushState=function(){return y(),M.apply(window.history,arguments)}),null!=window.history.replaceState&&(O=window.history.replaceState,window.history.replaceState=function(){return y(),O.apply(window.history,arguments)}),v=!0,B.restartOnBackboneRoute&&setTimeout(function(){return null!=window.Backbone?Backbone.history.on("route",function(a,b){var c,d,e,f,g;if(d=B.restartOnBackboneRoute){if(v)return v=!1,void 0;if("object"==typeof d){for(g=[],e=0,f=d.length;f>e;e++)if(c=d[e],c===b){Pace.restart();break}return g}return Pace.restart()}}):void 0},0),j={ajax:a,elements:d,document:c,eventLag:f},(z=function(){var a,c,d,e,f,g,h,i,l;for(Pace.sources=G=[],h=["ajax","elements","document","eventLag"],d=0,f=h.length;f>d;d++)c=h[d],B[c]!==!1&&G.push(new j[c](B[c]));for(l=null!=(i=B.extraSources)?i:[],e=0,g=l.length;g>e;e++)a=l[e],G.push(new a(B));return Pace.bar=p=new b,F=[],H=new k})(),Pace.stop=function(){return Pace.running=!1,p.destroy(),q=!0,null!=n&&("function"==typeof r&&r(n),n=null),z()},Pace.restart=function(){return Pace.stop(),Pace.go()},Pace.go=function(){return Pace.running=!0,p.render(),q=!1,n=E(function(a,b){var c,d,e,f,g,h,i,j,l,m,n,o,r,s,t,u,v,w;for(j=100-p.progress,d=r=0,e=!0,h=s=0,u=G.length;u>s;h=++s)for(n=G[h],m=null!=F[h]?F[h]:F[h]=[],g=null!=(w=n.elements)?w:[n],i=t=0,v=g.length;v>t;i=++t)f=g[i],l=null!=m[i]?m[i]:m[i]=new k(f),e&=l.done,l.done||(d++,r+=l.tick(a));return c=r/d,p.update(H.tick(a,c)),o=A(),p.done()||e||q?(p.update(100),setTimeout(function(){return p.finish(),Pace.running=!1},Math.max(B.ghostTime,Math.min(B.minTime,A()-o)))):b()})},Pace.start=function(a){t(B,a),Pace.running=!0;try{p.render()}catch(b){h=b}return document.querySelector(".pace")?Pace.go():setTimeout(Pace.start,50)},"function"==typeof define&&define.amd?define(function(){return Pace}):"object"==typeof exports?module.exports=Pace:B.startOnPageLoad&&Pace.start()}).call(this);
\ No newline at end of file
diff --git a/package.json b/package.json
index 55750e5b..395c5a0e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pace",
-  "version": "0.4.12",
+  "version": "0.4.13",
   "description": "Automatic page load progress bar",
   "authors": [
     "Zack Bloom <zbloom@hubspot.com>",