diff --git a/maubot/management/frontend/package.json b/maubot/management/frontend/package.json
index 7bd08ef..c25113f 100644
--- a/maubot/management/frontend/package.json
+++ b/maubot/management/frontend/package.json
@@ -5,6 +5,7 @@
   "dependencies": {
     "node-sass": "^4.9.4",
     "react": "^16.6.0",
+    "react-ace": "^6.2.0",
     "react-dom": "^16.6.0",
     "react-router-dom": "^4.3.1",
     "react-scripts": "2.0.5",
diff --git a/maubot/management/frontend/src/pages/dashboard/Instance.js b/maubot/management/frontend/src/pages/dashboard/Instance.js
index 6a8b762..67bcf16 100644
--- a/maubot/management/frontend/src/pages/dashboard/Instance.js
+++ b/maubot/management/frontend/src/pages/dashboard/Instance.js
@@ -15,6 +15,9 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 import React, { Component } from "react"
 import { NavLink, withRouter } from "react-router-dom"
+import AceEditor from "react-ace"
+import "brace/mode/yaml"
+import "brace/theme/github"
 import { ReactComponent as ChevronRight } from "../../res/chevron-right.svg"
 import PrefTable, { PrefInput, PrefSelect, PrefSwitch } from "../../components/PreferenceTable"
 import api from "../../api"
@@ -43,6 +46,7 @@ class Instance extends Component {
             enabled: true,
             started: true,
             type: "",
+            config: "",
 
             saving: false,
             deleting: false,
@@ -167,6 +171,12 @@ class Instance extends Component {
                             value={this.selectedPluginEntry}
                             onChange={({ id }) => this.setState({ type: id })}/>
             </PrefTable>
+            <AceEditor mode="yaml" theme="github" onChange={config => this.setState({ config })}
+                       name="config" value={this.state.config}
+                       editorProps={{
+                           fontSize: "10pt",
+                           $blockScrolling: true,
+                       }}/>
             <div className="buttons">
                 {!this.isNew && (
                     <button className="delete" onClick={this.delete} disabled={this.loading}>
diff --git a/maubot/management/frontend/src/style/pages/instance.sass b/maubot/management/frontend/src/style/pages/instance.sass
index f0d0377..6c3283c 100644
--- a/maubot/management/frontend/src/style/pages/instance.sass
+++ b/maubot/management/frontend/src/style/pages/instance.sass
@@ -26,3 +26,10 @@
                 max-height: 1.375rem
                 border-radius: 50%
                 margin-right: .5rem
+
+    > div.ace_editor
+        height: 15rem !important
+        width: 100% !important
+        font-size: 14px
+
+        margin-bottom: 1rem
diff --git a/maubot/management/frontend/yarn.lock b/maubot/management/frontend/yarn.lock
index 8775fa7..a0489ab 100644
--- a/maubot/management/frontend/yarn.lock
+++ b/maubot/management/frontend/yarn.lock
@@ -1937,6 +1937,11 @@ brace-expansion@^1.1.7:
     balanced-match "^1.0.0"
     concat-map "0.0.1"
 
+brace@^0.11.1:
+  version "0.11.1"
+  resolved "https://registry.yarnpkg.com/brace/-/brace-0.11.1.tgz#4896fcc9d544eef45f4bb7660db320d3b379fe58"
+  integrity sha1-SJb8ydVE7vRfS7dmDbMg07N5/lg=
+
 braces@^1.8.2:
   version "1.8.5"
   resolved "https://registry.yarnpkg.com/braces/-/braces-1.8.5.tgz#ba77962e12dff969d6b76711e914b737857bf6a7"
@@ -3175,6 +3180,11 @@ detect-port-alt@1.1.6:
     address "^1.0.1"
     debug "^2.6.0"
 
+diff-match-patch@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/diff-match-patch/-/diff-match-patch-1.0.4.tgz#6ac4b55237463761c4daf0dc603eb869124744b1"
+  integrity sha512-Uv3SW8bmH9nAtHKaKSanOQmj2DnlH65fUpcrMdfdaOxUG02QQ4YGZ8AE7kKOMisF7UqvOlGKVYWRvezdncW9lg==
+
 diff@^3.2.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
@@ -6298,6 +6308,16 @@ lodash.debounce@^4.0.8:
   resolved "https://registry.yarnpkg.com/lodash.debounce/-/lodash.debounce-4.0.8.tgz#82d79bff30a67c4005ffd5e2515300ad9ca4d7af"
   integrity sha1-gteb/zCmfEAF/9XiUVMArZyk168=
 
+lodash.get@^4.4.2:
+  version "4.4.2"
+  resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
+  integrity sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk=
+
+lodash.isequal@^4.5.0:
+  version "4.5.0"
+  resolved "https://registry.yarnpkg.com/lodash.isequal/-/lodash.isequal-4.5.0.tgz#415c4478f2bcc30120c22ce10ed3226f7d3e18e0"
+  integrity sha1-QVxEePK8wwEgwizhDtMib30+GOA=
+
 lodash.kebabcase@^4.0.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/lodash.kebabcase/-/lodash.kebabcase-4.1.1.tgz#8489b1cb0d29ff88195cceca448ff6d6cc295c36"
@@ -8434,6 +8454,17 @@ rc@^1.2.7:
     minimist "^1.2.0"
     strip-json-comments "~2.0.1"
 
+react-ace@^6.2.0:
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/react-ace/-/react-ace-6.2.0.tgz#9ab0fd88cd1ef6712fec4b243b61431964481c11"
+  integrity sha512-Cr27xFNZV2wlQi+mFjgUWfd3yPZV84Sf7XVrEXkDBZmQ5I/oY3x4KvtBjX6ImN7SCWu3sU6z9F3Zh6jH3/jtzw==
+  dependencies:
+    brace "^0.11.1"
+    diff-match-patch "^1.0.4"
+    lodash.get "^4.4.2"
+    lodash.isequal "^4.5.0"
+    prop-types "^15.6.2"
+
 react-app-polyfill@^0.1.3:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/react-app-polyfill/-/react-app-polyfill-0.1.3.tgz#e57bb50f3751dac0e6b3ac27673812c68c679a1d"