diff --git a/docs/_layouts/global.html b/docs/_layouts/global.html
index ef71211e6c8d0..96088544e21ba 100755
--- a/docs/_layouts/global.html
+++ b/docs/_layouts/global.html
@@ -196,7 +196,18 @@ <h1 class="title">{{ page.title }}</h1>
         <script src="{{ rel_path_to_root }}js/vendor/jquery.min.js"></script>
         <script src="{{ rel_path_to_root }}js/vendor/bootstrap.bundle.min.js"></script>
 
-        <script src="{{ rel_path_to_root }}js/vendor/anchor.min.js"></script>
+        <script src="{{ rel_path_to_root }}js/vendor/anchor.min.js">
+            // Keep the version of AnchorJS used here in sync with what's used on the main website.
+            // See: https://github.com/apache/spark-website/blob/asf-site/js/vendor/anchor.min.js
+        </script>
+        <script>
+            // Display anchor links when hovering over headings.
+            // See: https://www.bryanbraun.com/anchorjs/
+            anchors.options = { placement: 'right' };
+            // Note: AnchorJS 4.0+ excludes h1 from the default selector, but many
+            // Spark doc pages use h1 for section headings, so we include it explicitly.
+            anchors.add('h1, h2, h3, h4, h5, h6');
+        </script>
         <script src="{{ rel_path_to_root}}js/main.js"></script>
 
         <script type="text/javascript" src="{{ rel_path_to_root }}js/vendor/docsearch.min.js"></script>
diff --git a/docs/js/main.js b/docs/js/main.js
index 220cf4026bdcc..c6e15b469e612 100755
--- a/docs/js/main.js
+++ b/docs/js/main.js
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-/* global $, anchors */
+/* global $ */
 
 /* Custom JavaScript code in the MarkDown docs */
 
@@ -89,12 +89,6 @@ function codeTabs() {
 
 $(function() {
   codeTabs();
-  // Display anchor links when hovering over headers. For documentation of the
-  // configuration options, see the AnchorJS documentation.
-  anchors.options = {
-    placement: 'right'
-  };
-  anchors.add();
 
   // Make dropdown menus in nav bars show on hover instead of click
   // using solution at https://webdesign.tutsplus.com/tutorials/how-
diff --git a/docs/js/vendor/anchor.min.js b/docs/js/vendor/anchor.min.js
index 68c3cb7073b6d..00f80c058f6de 100755
--- a/docs/js/vendor/anchor.min.js
+++ b/docs/js/vendor/anchor.min.js
@@ -1,6 +1,9 @@
-/*!
- * AnchorJS - v1.1.1 - 2015-05-23
- * https://github.com/bryanbraun/anchorjs
- * Copyright (c) 2015 Bryan Braun; Licensed MIT
- */
-function AnchorJS(A){"use strict";this.options=A||{},this._applyRemainingDefaultOptions=function(A){this.options.icon=this.options.hasOwnProperty("icon")?A.icon:"&#xe9cb",this.options.visible=this.options.hasOwnProperty("visible")?A.visible:"hover",this.options.placement=this.options.hasOwnProperty("placement")?A.placement:"right",this.options.class=this.options.hasOwnProperty("class")?A.class:""},this._applyRemainingDefaultOptions(A),this.add=function(A){var e,t,o,n,i,s,a,l,c,r,h,g,B,Q;if(this._applyRemainingDefaultOptions(this.options),A){if("string"!=typeof A)throw new Error("The selector provided to AnchorJS was invalid.")}else A="h1, h2, h3, h4, h5, h6";if(e=document.querySelectorAll(A),0===e.length)return!1;for(this._addBaselineStyles(),t=document.querySelectorAll("[id]"),o=[].map.call(t,function(A){return A.id}),i=0;i<e.length;i++){if(e[i].hasAttribute("id"))n=e[i].getAttribute("id");else{s=e[i].textContent,a=s.replace(/[^\w\s-]/gi,"").replace(/\s+/g,"-").replace(/-{2,}/g,"-").substring(0,64).replace(/^-+|-+$/gm,"").toLowerCase(),r=a,c=0;do void 0!==l&&(r=a+"-"+c),l=o.indexOf(r),c+=1;while(-1!==l);l=void 0,o.push(r),e[i].setAttribute("id",r),n=r}h=n.replace(/-/g," "),g='<a class="anchorjs-link '+this.options.class+'" href="#'+n+'" aria-label="Anchor link for: '+h+'" data-anchorjs-icon="'+this.options.icon+'"></a>',B=document.createElement("div"),B.innerHTML=g,Q=B.childNodes,"always"===this.options.visible&&(Q[0].style.opacity="1"),"&#xe9cb"===this.options.icon&&(Q[0].style.fontFamily="anchorjs-icons",Q[0].style.fontStyle="normal",Q[0].style.fontVariant="normal",Q[0].style.fontWeight="normal"),"left"===this.options.placement?(Q[0].style.position="absolute",Q[0].style.marginLeft="-1em",Q[0].style.paddingRight="0.5em",e[i].insertBefore(Q[0],e[i].firstChild)):(Q[0].style.paddingLeft="0.375em",e[i].appendChild(Q[0]))}return this},this.remove=function(A){for(var e,t=document.querySelectorAll(A),o=0;o<t.length;o++)e=t[o].querySelector(".anchorjs-link"),e&&t[o].removeChild(e);return this},this._addBaselineStyles=function(){if(null===document.head.querySelector("style.anchorjs")){var A,e=document.createElement("style"),t=" .anchorjs-link {   opacity: 0;   text-decoration: none;   -webkit-font-smoothing: antialiased;   -moz-osx-font-smoothing: grayscale; }",o=" *:hover > .anchorjs-link, .anchorjs-link:focus  {   opacity: 1; }",n=' @font-face {   font-family: "anchorjs-icons";   font-style: normal;   font-weight: normal;   src: url(data:application/x-font-ttf;charset=utf-8;base64,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) format("truetype"); }',i=" [data-anchorjs-icon]::after {   content: attr(data-anchorjs-icon); }";e.className="anchorjs",e.appendChild(document.createTextNode("")),A=document.head.querySelector('[rel="stylesheet"], style'),void 0===A?document.head.appendChild(e):document.head.insertBefore(e,A),e.sheet.insertRule(t,e.sheet.cssRules.length),e.sheet.insertRule(o,e.sheet.cssRules.length),e.sheet.insertRule(i,e.sheet.cssRules.length),e.sheet.insertRule(n,e.sheet.cssRules.length)}}}var anchors=new AnchorJS;
+// @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&dn=expat.txt Expat
+//
+// AnchorJS - v5.0.0 - 2023-01-18
+// https://www.bryanbraun.com/anchorjs/
+// Copyright (c) 2023 Bryan Braun; Licensed MIT
+//
+// @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&dn=expat.txt Expat
+!function(A,e){"use strict";"function"==typeof define&&define.amd?define([],e):"object"==typeof module&&module.exports?module.exports=e():(A.AnchorJS=e(),A.anchors=new A.AnchorJS)}(globalThis,function(){"use strict";return function(A){function u(A){A.icon=Object.prototype.hasOwnProperty.call(A,"icon")?A.icon:"",A.visible=Object.prototype.hasOwnProperty.call(A,"visible")?A.visible:"hover",A.placement=Object.prototype.hasOwnProperty.call(A,"placement")?A.placement:"right",A.ariaLabel=Object.prototype.hasOwnProperty.call(A,"ariaLabel")?A.ariaLabel:"Anchor",A.class=Object.prototype.hasOwnProperty.call(A,"class")?A.class:"",A.base=Object.prototype.hasOwnProperty.call(A,"base")?A.base:"",A.truncate=Object.prototype.hasOwnProperty.call(A,"truncate")?Math.floor(A.truncate):64,A.titleText=Object.prototype.hasOwnProperty.call(A,"titleText")?A.titleText:""}function d(A){var e;if("string"==typeof A||A instanceof String)e=[].slice.call(document.querySelectorAll(A));else{if(!(Array.isArray(A)||A instanceof NodeList))throw new TypeError("The selector provided to AnchorJS was invalid.");e=[].slice.call(A)}return e}this.options=A||{},this.elements=[],u(this.options),this.add=function(A){var e,t,o,i,n,s,a,r,l,c,h,p=[];if(u(this.options),0!==(e=d(A=A||"h2, h3, h4, h5, h6")).length){for(null===document.head.querySelector("style.anchorjs")&&((A=document.createElement("style")).className="anchorjs",A.appendChild(document.createTextNode("")),void 0===(h=document.head.querySelector('[rel="stylesheet"],style'))?document.head.appendChild(A):document.head.insertBefore(A,h),A.sheet.insertRule(".anchorjs-link{opacity:0;text-decoration:none;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}",A.sheet.cssRules.length),A.sheet.insertRule(":hover>.anchorjs-link,.anchorjs-link:focus{opacity:1}",A.sheet.cssRules.length),A.sheet.insertRule("[data-anchorjs-icon]::after{content:attr(data-anchorjs-icon)}",A.sheet.cssRules.length),A.sheet.insertRule('@font-face{font-family:anchorjs-icons;src:url(data:n/a;base64,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) format("truetype")}',A.sheet.cssRules.length)),h=document.querySelectorAll("[id]"),t=[].map.call(h,function(A){return A.id}),i=0;i<e.length;i++)if(this.hasAnchorJSLink(e[i]))p.push(i);else{if(e[i].hasAttribute("id"))o=e[i].getAttribute("id");else if(e[i].hasAttribute("data-anchor-id"))o=e[i].getAttribute("data-anchor-id");else{for(r=a=this.urlify(e[i].textContent),s=0;n=t.indexOf(r=void 0!==n?a+"-"+s:r),s+=1,-1!==n;);n=void 0,t.push(r),e[i].setAttribute("id",r),o=r}(l=document.createElement("a")).className="anchorjs-link "+this.options.class,l.setAttribute("aria-label",this.options.ariaLabel),l.setAttribute("data-anchorjs-icon",this.options.icon),this.options.titleText&&(l.title=this.options.titleText),c=document.querySelector("base")?window.location.pathname+window.location.search:"",c=this.options.base||c,l.href=c+"#"+o,"always"===this.options.visible&&(l.style.opacity="1"),""===this.options.icon&&(l.style.font="1em/1 anchorjs-icons","left"===this.options.placement)&&(l.style.lineHeight="inherit"),"left"===this.options.placement?(l.style.position="absolute",l.style.marginLeft="-1.25em",l.style.paddingRight=".25em",l.style.paddingLeft=".25em",e[i].insertBefore(l,e[i].firstChild)):(l.style.marginLeft=".1875em",l.style.paddingRight=".1875em",l.style.paddingLeft=".1875em",e[i].appendChild(l))}for(i=0;i<p.length;i++)e.splice(p[i]-i,1);this.elements=this.elements.concat(e)}return this},this.remove=function(A){for(var e,t,o=d(A),i=0;i<o.length;i++)(t=o[i].querySelector(".anchorjs-link"))&&(-1!==(e=this.elements.indexOf(o[i]))&&this.elements.splice(e,1),o[i].removeChild(t));return this},this.removeAll=function(){this.remove(this.elements)},this.urlify=function(A){var e=document.createElement("textarea");return e.innerHTML=A,A=e.value,this.options.truncate||u(this.options),A.trim().replace(/'/gi,"").replace(/[& +$,:;=?@"#{}|^~[`%!'<>\]./()*\\\n\t\b\v\u00A0]/g,"-").replace(/-{2,}/g,"-").substring(0,this.options.truncate).replace(/^-+|-+$/gm,"").toLowerCase()},this.hasAnchorJSLink=function(A){var e=A.firstChild&&-1<(" "+A.firstChild.className+" ").indexOf(" anchorjs-link "),A=A.lastChild&&-1<(" "+A.lastChild.className+" ").indexOf(" anchorjs-link ");return e||A||!1}}});
+// @license-end
diff --git a/licenses/LICENSE-AnchorJS.txt b/licenses/LICENSE-AnchorJS.txt
index 2bf24b9b9f848..44d43b38e4991 100644
--- a/licenses/LICENSE-AnchorJS.txt
+++ b/licenses/LICENSE-AnchorJS.txt
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) <year> <copyright holders>
+Copyright (c) 2023 Bryan Braun
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal