diff --git a/README.Rmd b/README.Rmd
index 0e3d231..bcd051d 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -32,8 +32,8 @@ Find more information in the [documentation](https://elbersb.de/segregation).
 - calculate total, between, within, and local segregation
 - decompose differences in total segregation over time
 - estimate standard errors via bootstrapping
-- every method returns a [tidy](http://vita.had.co.nz/papers/tidy-data.html) [data.table](http://r-datatable.com) for easy post-processing and plotting
-- it's fast, because it uses the [`data.table`](https://github.com/Rdatatable/data.table/wiki) package internally
+- every method returns a [tidy](https://vita.had.co.nz/papers/tidy-data.html) [data.table](https://rdatatable.gitlab.io/data.table/) for easy post-processing and plotting
+- it's fast, because it uses the [`data.table`](https://rdatatable.gitlab.io/data.table/) package internally
 
 Most of the procedures implemented in this package are described in more detail [in this working paper](https://osf.io/preprints/socarxiv/ya7zs/).
 
diff --git a/README.md b/README.md
index 5b7695b..1ac399e 100644
--- a/README.md
+++ b/README.md
@@ -21,12 +21,12 @@ Find more information in the
 -   decompose differences in total segregation over time
 -   estimate standard errors via bootstrapping
 -   every method returns a
-    [tidy](http://vita.had.co.nz/papers/tidy-data.html)
-    [data.table](http://r-datatable.com) for easy post-processing and
-    plotting
+    [tidy](https://vita.had.co.nz/papers/tidy-data.html)
+    [data.table](https://rdatatable.gitlab.io/data.table/) for easy
+    post-processing and plotting
 -   it’s fast, because it uses the
-    [`data.table`](https://github.com/Rdatatable/data.table/wiki)
-    package internally
+    [`data.table`](https://rdatatable.gitlab.io/data.table/) package
+    internally
 
 Most of the procedures implemented in this package are described in more
 detail [in this working
diff --git a/cran-comments.md b/cran-comments.md
index 46babf4..d7c523b 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -1,3 +1,5 @@
+Resubmit, fix URL 
+
 ## Test environments
 
 * local macOS 11.1, R 4.0.2
diff --git a/docs/404.html b/docs/404.html
index ae8e589..b9db92a 100644
--- a/docs/404.html
+++ b/docs/404.html
@@ -71,7 +71,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -92,7 +92,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
diff --git a/docs/LICENSE-text.html b/docs/LICENSE-text.html
index 8d038c2..f9e7cd7 100644
--- a/docs/LICENSE-text.html
+++ b/docs/LICENSE-text.html
@@ -71,7 +71,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -92,7 +92,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
diff --git a/docs/authors.html b/docs/authors.html
index c117f48..acb37dc 100644
--- a/docs/authors.html
+++ b/docs/authors.html
@@ -71,7 +71,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -92,7 +92,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
diff --git a/docs/index.html b/docs/index.html
index dde368f..b5a1a53 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -39,7 +39,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -60,7 +60,7 @@
       </ul>
 <ul class="nav navbar-nav navbar-right">
 <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
@@ -87,8 +87,8 @@
 <li>calculate total, between, within, and local segregation</li>
 <li>decompose differences in total segregation over time</li>
 <li>estimate standard errors via bootstrapping</li>
-<li>every method returns a <a href="http://vita.had.co.nz/papers/tidy-data.html">tidy</a> <a href="http://r-datatable.com">data.table</a> for easy post-processing and plotting</li>
-<li>it’s fast, because it uses the <a href="https://github.com/Rdatatable/data.table/wiki"><code>data.table</code></a> package internally</li>
+<li>every method returns a <a href="https://vita.had.co.nz/papers/tidy-data.html">tidy</a> <a href="https://rdatatable.gitlab.io/data.table/">data.table</a> for easy post-processing and plotting</li>
+<li>it’s fast, because it uses the <a href="https://rdatatable.gitlab.io/data.table/"><code>data.table</code></a> package internally</li>
 </ul>
 <p>Most of the procedures implemented in this package are described in more detail <a href="https://osf.io/preprints/socarxiv/ya7zs/">in this working paper</a>.</p>
 <div id="usage" class="section level2">
@@ -96,7 +96,7 @@ <h2 class="hasAnchor">
 <a href="#usage" class="anchor"></a>Usage</h2>
 <p>The package provides an easy way to calculate segregation measures, based on the Mutual Information Index (M) and Theil’s Entropy Index (H).</p>
 <div class="sourceCode" id="cb1"><pre class="downlit sourceCode r">
-<code class="sourceCode R"><span class="kw"><a href="https://rdrr.io/r/base/library.html">library</a></span><span class="op">(</span><span class="va"><a href="http://github.com/elbersb/segregation">segregation</a></span><span class="op">)</span>
+<code class="sourceCode R"><span class="kw"><a href="https://rdrr.io/r/base/library.html">library</a></span><span class="op">(</span><span class="va"><a href="https://github.com/elbersb/segregation">segregation</a></span><span class="op">)</span>
 
 <span class="co"># example dataset with fake data provided by the package</span>
 <span class="fu"><a href="reference/mutual_total.html">mutual_total</a></span><span class="op">(</span><span class="va">schools00</span>, <span class="st">"race"</span>, <span class="st">"school"</span>, weight <span class="op">=</span> <span class="st">"n"</span><span class="op">)</span>
@@ -192,9 +192,9 @@ <h2>Links</h2>
 <ul class="list-unstyled">
 <li>Download from CRAN at <br><a href="https://cloud.r-project.org/package=segregation">https://​cloud.r-project.org/​package=segregation</a>
 </li>
-<li>Browse source code at <br><a href="http://github.com/elbersb/segregation/">http://​github.com/​elbersb/​segregation/​</a>
+<li>Browse source code at <br><a href="https://github.com/elbersb/segregation/">https://​github.com/​elbersb/​segregation/​</a>
 </li>
-<li>Report a bug at <br><a href="http://github.com/elbersb/segregation/issues">http://​github.com/​elbersb/​segregation/​issues</a>
+<li>Report a bug at <br><a href="https://github.com/elbersb/segregation/issues">https://​github.com/​elbersb/​segregation/​issues</a>
 </li>
 </ul>
 </div>
diff --git a/docs/news/index.html b/docs/news/index.html
index 6d79f3f..915041a 100644
--- a/docs/news/index.html
+++ b/docs/news/index.html
@@ -71,7 +71,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -92,7 +92,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
@@ -111,12 +111,12 @@
   <div class="col-md-9 contents">
     <div class="page-header">
       <h1 data-toc-skip>Changelog <small></small></h1>
-      <small>Source: <a href='http://github.com/elbersb/segregation/blob/master/NEWS.md'><code>NEWS.md</code></a></small>
+      <small>Source: <a href='https://github.com/elbersb/segregation/blob/master/NEWS.md'><code>NEWS.md</code></a></small>
     </div>
 
-    <div id="segregation-0309000" class="section level1">
-<h1 class="page-header" data-toc-text="0.3.0.9000">
-<a href="#segregation-0309000" class="anchor"></a>segregation 0.3.0.9000<small> Unreleased </small>
+    <div id="segregation-040" class="section level1">
+<h1 class="page-header" data-toc-text="0.4.0">
+<a href="#segregation-040" class="anchor"></a>segregation 0.4.0<small> Unreleased </small>
 </h1>
 <ul>
 <li>faster bootstrap</li>
@@ -136,7 +136,7 @@ <h1 class="page-header" data-toc-text="0.3.0">
 <li>don’t allow bootstrap when sample size is not an integer, but allow non-integer sample weights (which are unproblematic)</li>
 <li>simplify precision parameter for ipf procedure</li>
 <li>increase default bootstrap to 100</li>
-<li>fix data.table issue (<a href='http://github.com/elbersb/segregation/issues/3'>#3</a>)</li>
+<li>fix data.table issue (<a href='https://github.com/elbersb/segregation/issues/3'>#3</a>)</li>
 </ul>
 </div>
     <div id="segregation-020" class="section level1">
diff --git a/docs/pkgdown.yml b/docs/pkgdown.yml
index 84561f9..fe25dc6 100644
--- a/docs/pkgdown.yml
+++ b/docs/pkgdown.yml
@@ -2,5 +2,5 @@ pandoc: 2.11.3.2
 pkgdown: 1.6.1
 pkgdown_sha: ~
 articles: {}
-last_built: 2021-01-07T17:35Z
+last_built: 2021-01-08T11:09Z
 
diff --git a/docs/reference/entropy.html b/docs/reference/entropy.html
index b5537e9..ff4c93c 100644
--- a/docs/reference/entropy.html
+++ b/docs/reference/entropy.html
@@ -73,7 +73,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -94,7 +94,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
@@ -113,7 +113,7 @@
   <div class="col-md-9 contents">
     <div class="page-header">
     <h1>Calculates the entropy of a distribution</h1>
-    <small class="dont-index">Source: <a href='http://github.com/elbersb/segregation/blob/master/R/segregation.R'><code>R/segregation.R</code></a></small>
+    <small class="dont-index">Source: <a href='https://github.com/elbersb/segregation/blob/master/R/segregation.R'><code>R/segregation.R</code></a></small>
     <div class="hidden name"><code>entropy.Rd</code></div>
     </div>
 
diff --git a/docs/reference/index.html b/docs/reference/index.html
index 7bf6f68..dfad4dd 100644
--- a/docs/reference/index.html
+++ b/docs/reference/index.html
@@ -71,7 +71,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -92,7 +92,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
diff --git a/docs/reference/ipf.html b/docs/reference/ipf.html
index 372fa17..c574d8c 100644
--- a/docs/reference/ipf.html
+++ b/docs/reference/ipf.html
@@ -74,7 +74,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -95,7 +95,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
@@ -114,7 +114,7 @@
   <div class="col-md-9 contents">
     <div class="page-header">
     <h1>Adjustment of marginal distributions using iterative proportional fitting</h1>
-    <small class="dont-index">Source: <a href='http://github.com/elbersb/segregation/blob/master/R/ipf.R'><code>R/ipf.R</code></a></small>
+    <small class="dont-index">Source: <a href='https://github.com/elbersb/segregation/blob/master/R/ipf.R'><code>R/ipf.R</code></a></small>
     <div class="hidden name"><code>ipf.Rd</code></div>
     </div>
 
diff --git a/docs/reference/mutual_difference.html b/docs/reference/mutual_difference.html
index 9ca3456..5122447 100644
--- a/docs/reference/mutual_difference.html
+++ b/docs/reference/mutual_difference.html
@@ -78,7 +78,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -99,7 +99,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
@@ -118,7 +118,7 @@
   <div class="col-md-9 contents">
     <div class="page-header">
     <h1>Decomposes the difference between two M indices</h1>
-    <small class="dont-index">Source: <a href='http://github.com/elbersb/segregation/blob/master/R/mutual_difference.R'><code>R/mutual_difference.R</code></a></small>
+    <small class="dont-index">Source: <a href='https://github.com/elbersb/segregation/blob/master/R/mutual_difference.R'><code>R/mutual_difference.R</code></a></small>
     <div class="hidden name"><code>mutual_difference.Rd</code></div>
     </div>
 
diff --git a/docs/reference/mutual_expected.html b/docs/reference/mutual_expected.html
index 1f90933..93e1af1 100644
--- a/docs/reference/mutual_expected.html
+++ b/docs/reference/mutual_expected.html
@@ -77,7 +77,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -98,7 +98,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
@@ -117,7 +117,7 @@
   <div class="col-md-9 contents">
     <div class="page-header">
     <h1>Calculate expected values when true segregation is zero</h1>
-    <small class="dont-index">Source: <a href='http://github.com/elbersb/segregation/blob/master/R/mutual_expected.R'><code>R/mutual_expected.R</code></a></small>
+    <small class="dont-index">Source: <a href='https://github.com/elbersb/segregation/blob/master/R/mutual_expected.R'><code>R/mutual_expected.R</code></a></small>
     <div class="hidden name"><code>mutual_expected.Rd</code></div>
     </div>
 
diff --git a/docs/reference/mutual_local.html b/docs/reference/mutual_local.html
index 3042d55..cb89829 100644
--- a/docs/reference/mutual_local.html
+++ b/docs/reference/mutual_local.html
@@ -73,7 +73,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -94,7 +94,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
@@ -113,7 +113,7 @@
   <div class="col-md-9 contents">
     <div class="page-header">
     <h1>Calculates local segregation indices based on M</h1>
-    <small class="dont-index">Source: <a href='http://github.com/elbersb/segregation/blob/master/R/mutual.R'><code>R/mutual.R</code></a></small>
+    <small class="dont-index">Source: <a href='https://github.com/elbersb/segregation/blob/master/R/mutual.R'><code>R/mutual.R</code></a></small>
     <div class="hidden name"><code>mutual_local.Rd</code></div>
     </div>
 
diff --git a/docs/reference/mutual_total.html b/docs/reference/mutual_total.html
index c9feb31..f3c2007 100644
--- a/docs/reference/mutual_total.html
+++ b/docs/reference/mutual_total.html
@@ -75,7 +75,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -96,7 +96,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
@@ -115,7 +115,7 @@
   <div class="col-md-9 contents">
     <div class="page-header">
     <h1>Calculate total segregation for M and H</h1>
-    <small class="dont-index">Source: <a href='http://github.com/elbersb/segregation/blob/master/R/mutual.R'><code>R/mutual.R</code></a></small>
+    <small class="dont-index">Source: <a href='https://github.com/elbersb/segregation/blob/master/R/mutual.R'><code>R/mutual.R</code></a></small>
     <div class="hidden name"><code>mutual_total.Rd</code></div>
     </div>
 
diff --git a/docs/reference/mutual_within.html b/docs/reference/mutual_within.html
index 4314327..2da005c 100644
--- a/docs/reference/mutual_within.html
+++ b/docs/reference/mutual_within.html
@@ -73,7 +73,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -94,7 +94,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
@@ -113,7 +113,7 @@
   <div class="col-md-9 contents">
     <div class="page-header">
     <h1>Calculate detailed within-category segregation scores for M and H</h1>
-    <small class="dont-index">Source: <a href='http://github.com/elbersb/segregation/blob/master/R/mutual.R'><code>R/mutual.R</code></a></small>
+    <small class="dont-index">Source: <a href='https://github.com/elbersb/segregation/blob/master/R/mutual.R'><code>R/mutual.R</code></a></small>
     <div class="hidden name"><code>mutual_within.Rd</code></div>
     </div>
 
diff --git a/docs/reference/schools00.html b/docs/reference/schools00.html
index d3df1b9..b9fcb5a 100644
--- a/docs/reference/schools00.html
+++ b/docs/reference/schools00.html
@@ -75,7 +75,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -96,7 +96,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
@@ -115,7 +115,7 @@
   <div class="col-md-9 contents">
     <div class="page-header">
     <h1>Ethnic/racial composition of schools for 2000/2001</h1>
-    <small class="dont-index">Source: <a href='http://github.com/elbersb/segregation/blob/master/R/data.R'><code>R/data.R</code></a></small>
+    <small class="dont-index">Source: <a href='https://github.com/elbersb/segregation/blob/master/R/data.R'><code>R/data.R</code></a></small>
     <div class="hidden name"><code>schools00.Rd</code></div>
     </div>
 
diff --git a/docs/reference/schools05.html b/docs/reference/schools05.html
index 5939388..5cec88b 100644
--- a/docs/reference/schools05.html
+++ b/docs/reference/schools05.html
@@ -75,7 +75,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -96,7 +96,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
@@ -115,7 +115,7 @@
   <div class="col-md-9 contents">
     <div class="page-header">
     <h1>Ethnic/racial composition of schools for 2005/2006</h1>
-    <small class="dont-index">Source: <a href='http://github.com/elbersb/segregation/blob/master/R/data.R'><code>R/data.R</code></a></small>
+    <small class="dont-index">Source: <a href='https://github.com/elbersb/segregation/blob/master/R/data.R'><code>R/data.R</code></a></small>
     <div class="hidden name"><code>schools05.Rd</code></div>
     </div>
 
diff --git a/docs/reference/segregation.html b/docs/reference/segregation.html
index 0de260a..7d2389d 100644
--- a/docs/reference/segregation.html
+++ b/docs/reference/segregation.html
@@ -75,7 +75,7 @@
       </button>
       <span class="navbar-brand">
         <a class="navbar-link" href="../index.html">segregation</a>
-        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.3.0.9000</span>
+        <span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.4.0</span>
       </span>
     </div>
 
@@ -96,7 +96,7 @@
       </ul>
       <ul class="nav navbar-nav navbar-right">
         <li>
-  <a href="http://github.com/elbersb/segregation/">
+  <a href="https://github.com/elbersb/segregation/">
     <span class="fab fa fab fa-github fa-lg"></span>
      
   </a>
@@ -115,7 +115,7 @@
   <div class="col-md-9 contents">
     <div class="page-header">
     <h1>segregation: Entropy-based segregation indices</h1>
-    <small class="dont-index">Source: <a href='http://github.com/elbersb/segregation/blob/master/R/segregation.R'><code>R/segregation.R</code></a></small>
+    <small class="dont-index">Source: <a href='https://github.com/elbersb/segregation/blob/master/R/segregation.R'><code>R/segregation.R</code></a></small>
     <div class="hidden name"><code>segregation.Rd</code></div>
     </div>