diff --git a/README.md b/README.md
index a5567c4..28ee350 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 Ready-made templates for the [phpBB Modders wiki extension](https://github.com/phpbbmodders/phpbb-ext-wiki), adapted from Wikipedia's and other Wikimedia wikis' for what the wiki can do, so a board can start with a useful set instead of writing every template from nothing.
 
-So far [`templates/`](templates/) holds the hatnotes `{{Main}}`, `{{See also}}`, `{{Further}}`, `{{About}}`, `{{Distinguish}}`, `{{For}}`, `{{Other uses}}` and `{{Redirect}}`; the message boxes `{{Ambox}}`, `{{Update}}`, `{{Unreferenced}}`, `{{More citations needed}}`, `{{Primary sources}}`, `{{Cleanup}}`, `{{Confusing}}`, `{{Technical}}`, `{{Expand section}}` and `{{Under construction}}`; the stub boxes `{{Asbox}}` and `{{Stub}}`; the inline helpers `{{Nowrap}}`, `{{Small}}`, `{{Large}}` and `{{Center}}`; `{{Blockquote}}` (phpBB's quote box) and `{{Template link}}`, which shows a template's name in braces as a link; `{{Infobox}}`, a table of labelled facts that other infoboxes can be built on; and `{{Cite web}}`, a citation of a web page in Wikipedia's style. The plan for this repository is in the wiki extension's [`docs/TODO/todo-wiki-templates-repo.md`](https://github.com/phpbbmodders/phpbb-ext-wiki/blob/main/docs/TODO/todo-wiki-templates-repo.md).
+So far [`templates/`](templates/) holds the hatnotes `{{Main}}`, `{{See also}}`, `{{Further}}`, `{{About}}`, `{{Distinguish}}`, `{{For}}`, `{{Other uses}}` and `{{Redirect}}`; the message boxes `{{Ambox}}`, `{{Update}}`, `{{Unreferenced}}`, `{{More citations needed}}`, `{{Primary sources}}`, `{{Cleanup}}`, `{{Confusing}}`, `{{Technical}}`, `{{Expand section}}` and `{{Under construction}}`; the stub boxes `{{Asbox}}` and `{{Stub}}`; the inline helpers `{{Nowrap}}`, `{{Small}}`, `{{Large}}` and `{{Center}}`; `{{Blockquote}}` (phpBB's quote box) and `{{Template link}}`, which shows a template's name in braces as a link; `{{Infobox}}`, a table of labelled facts that other infoboxes can be built on; `{{Cite web}}`, a citation of a web page in Wikipedia's style; and `{{Navbox}}`, a box of links to related articles that the reader opens and closes (wiki extension 1.1.0-a2 and later). The plan for this repository is in the wiki extension's [`docs/TODO/todo-wiki-templates-repo.md`](https://github.com/phpbbmodders/phpbb-ext-wiki/blob/main/docs/TODO/todo-wiki-templates-repo.md).
 
 ## Why a separate repository
 
diff --git a/data/templates.json b/data/templates.json
index 423ccad..48d5db2 100644
--- a/data/templates.json
+++ b/data/templates.json
@@ -34,6 +34,13 @@
     "status": "adapted",
     "title": "Template:Blockquote"
   },
+  "enwiki:995954": {
+    "name": "Navbox",
+    "reason": "",
+    "revid": 1030560841,
+    "status": "adapted",
+    "title": "Template:Navbox"
+  },
   "enwiki:1208356": {
     "name": "Main",
     "reason": "",
diff --git a/templates/Navbox.wiki b/templates/Navbox.wiki
new file mode 100644
index 0000000..41cbf80
--- /dev/null
+++ b/templates/Navbox.wiki
@@ -0,0 +1,10 @@
+<noinclude>
+Source: https://en.wikipedia.org/wiki/Template:Navbox
+History: https://en.wikipedia.org/w/index.php?title=Template:Navbox&action=history
+Revision: https://en.wikipedia.org/w/index.php?title=Template:Navbox&oldid=1030560841 (06/26/2021 6:05 PM UTC)
+Adapted by phpBB Modders.
+Changes: rewritten in plain wiki text without Lua (Module:Navbox) as a box the reader opens and closes (the wiki's details and summary tags, wiki extension 1.1.0-a2 and later): title, above, below and 20 numbered rows, each a group with its list or a list alone (a group without a list is left out); it starts closed, and state=expanded starts it open, instead of Wikipedia's autocollapse; no view, talk and edit links, image, child navboxes, class, style or list numbering options; removed the source's documentation and categories.
+Example: {{Navbox|title=Wiki features|state=expanded|group1=Pages|list1=[[Main Page]] · [[Help]]|group2=Tools|list2=[[Search]] · [[Recent changes]]|below=More on the wiki}}
+Example: {{Navbox|title=Short|state=expanded|list1=Just one list}}
+Licence: CC BY-SA 4.0, https://creativecommons.org/licenses/by-sa/4.0/
+</noinclude>{{#ifeq:{{{state|}}}|expanded|<details class="navbox" open>|<details class="navbox">}}<summary>{{{title|}}}</summary><table>{{#if:{{{above|}}}|<tr><td colspan="2">{{{above}}}</td></tr>}}{{#if:{{{list1|}}}|<tr>{{#if:{{{group1|}}}|<th>{{{group1}}}</th><td>{{{list1}}}</td>|<td colspan="2">{{{list1}}}</td>}}</tr>}}{{#if:{{{list2|}}}|<tr>{{#if:{{{group2|}}}|<th>{{{group2}}}</th><td>{{{list2}}}</td>|<td colspan="2">{{{list2}}}</td>}}</tr>}}{{#if:{{{list3|}}}|<tr>{{#if:{{{group3|}}}|<th>{{{group3}}}</th><td>{{{list3}}}</td>|<td colspan="2">{{{list3}}}</td>}}</tr>}}{{#if:{{{list4|}}}|<tr>{{#if:{{{group4|}}}|<th>{{{group4}}}</th><td>{{{list4}}}</td>|<td colspan="2">{{{list4}}}</td>}}</tr>}}{{#if:{{{list5|}}}|<tr>{{#if:{{{group5|}}}|<th>{{{group5}}}</th><td>{{{list5}}}</td>|<td colspan="2">{{{list5}}}</td>}}</tr>}}{{#if:{{{list6|}}}|<tr>{{#if:{{{group6|}}}|<th>{{{group6}}}</th><td>{{{list6}}}</td>|<td colspan="2">{{{list6}}}</td>}}</tr>}}{{#if:{{{list7|}}}|<tr>{{#if:{{{group7|}}}|<th>{{{group7}}}</th><td>{{{list7}}}</td>|<td colspan="2">{{{list7}}}</td>}}</tr>}}{{#if:{{{list8|}}}|<tr>{{#if:{{{group8|}}}|<th>{{{group8}}}</th><td>{{{list8}}}</td>|<td colspan="2">{{{list8}}}</td>}}</tr>}}{{#if:{{{list9|}}}|<tr>{{#if:{{{group9|}}}|<th>{{{group9}}}</th><td>{{{list9}}}</td>|<td colspan="2">{{{list9}}}</td>}}</tr>}}{{#if:{{{list10|}}}|<tr>{{#if:{{{group10|}}}|<th>{{{group10}}}</th><td>{{{list10}}}</td>|<td colspan="2">{{{list10}}}</td>}}</tr>}}{{#if:{{{list11|}}}|<tr>{{#if:{{{group11|}}}|<th>{{{group11}}}</th><td>{{{list11}}}</td>|<td colspan="2">{{{list11}}}</td>}}</tr>}}{{#if:{{{list12|}}}|<tr>{{#if:{{{group12|}}}|<th>{{{group12}}}</th><td>{{{list12}}}</td>|<td colspan="2">{{{list12}}}</td>}}</tr>}}{{#if:{{{list13|}}}|<tr>{{#if:{{{group13|}}}|<th>{{{group13}}}</th><td>{{{list13}}}</td>|<td colspan="2">{{{list13}}}</td>}}</tr>}}{{#if:{{{list14|}}}|<tr>{{#if:{{{group14|}}}|<th>{{{group14}}}</th><td>{{{list14}}}</td>|<td colspan="2">{{{list14}}}</td>}}</tr>}}{{#if:{{{list15|}}}|<tr>{{#if:{{{group15|}}}|<th>{{{group15}}}</th><td>{{{list15}}}</td>|<td colspan="2">{{{list15}}}</td>}}</tr>}}{{#if:{{{list16|}}}|<tr>{{#if:{{{group16|}}}|<th>{{{group16}}}</th><td>{{{list16}}}</td>|<td colspan="2">{{{list16}}}</td>}}</tr>}}{{#if:{{{list17|}}}|<tr>{{#if:{{{group17|}}}|<th>{{{group17}}}</th><td>{{{list17}}}</td>|<td colspan="2">{{{list17}}}</td>}}</tr>}}{{#if:{{{list18|}}}|<tr>{{#if:{{{group18|}}}|<th>{{{group18}}}</th><td>{{{list18}}}</td>|<td colspan="2">{{{list18}}}</td>}}</tr>}}{{#if:{{{list19|}}}|<tr>{{#if:{{{group19|}}}|<th>{{{group19}}}</th><td>{{{list19}}}</td>|<td colspan="2">{{{list19}}}</td>}}</tr>}}{{#if:{{{list20|}}}|<tr>{{#if:{{{group20|}}}|<th>{{{group20}}}</th><td>{{{list20}}}</td>|<td colspan="2">{{{list20}}}</td>}}</tr>}}{{#if:{{{below|}}}|<tr><td colspan="2">{{{below}}}</td></tr>}}</table></details>
\ No newline at end of file