diff --git a/README.md b/README.md
index b2681a75..ab3176a6 100644
--- a/README.md
+++ b/README.md
@@ -148,6 +148,7 @@ Say thanks!
 <td>Duck Duck Go<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/duckduckgo.svg" width="125" title="Duck Duck Go" /><br>926 Bytes</td>
 <td>Bing<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/bing.svg" width="125" title="Bing" /><br>241 Bytes</td>
 <td>IMDb<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/imdb.svg" width="125" title="IMDb" /><br>526 Bytes</td>
+<td>Heroku<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/heroku.svg" width="125" title="Heroku" /><br>453 Bytes</td>
 </tr>
 </table>
 
@@ -246,6 +247,7 @@ Say thanks!
 <td>Linux<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/linux.svg" width="125" title="Linux" /><br>966 Bytes</td>
 <td>JSON<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/json.svg" width="125" title="JSON" /><br>557 Bytes</td>
 <td>Yarn<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/yarn.svg" width="125" title="Yarn" /><br>514 Bytes</td>
+<td>Backbone<br><img src="https://edent.github.io/SuperTinyIcons/images/svg/backbone.svg" width="125" title="Backbone" /><br>463 Bytes</td>
 </tr>
 </table>
 
diff --git a/images/android-vector-drawable/backbone.xml b/images/android-vector-drawable/backbone.xml
new file mode 100644
index 00000000..cd3a3883
--- /dev/null
+++ b/images/android-vector-drawable/backbone.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="512dp"
+    android:height="512dp"
+    android:viewportWidth="512"
+    android:viewportHeight="512">
+
+    <path
+        android:fillColor="#fff"
+        android:pathData="M15,0 L497,0 Q512,0,512,15 L512,497 Q512,512,497,512 L15,512 Q0,512,0,497 L0,15 Q0,0,15,0 Z" />
+    <path
+        android:fillColor="#000000"
+        android:strokeColor="#848484"
+        android:strokeWidth="2"
+        android:pathData="M380,102 L380,269 L256,339 L256,291 L339,244 L339,170 L256,217 L256,173 L380,102" />
+    <path
+        android:fillColor="#002a41"
+        android:strokeColor="#848484"
+        android:strokeWidth="2"
+        android:pathData="M132,102 L132,269 L256,339 L256,291 L173,244 L173,170 L256,217 L256,173 L132,102 M380,410 L380,243 L256,173 L256,221 L339,268 L339,339 L256,291 L256,339 L380,410" />
+    <path
+        android:fillColor="#000000"
+        android:strokeColor="#848484"
+        android:strokeWidth="2"
+        android:pathData="M132,410 L132,243 L256,173 L256,221 L173,268 L173,339 L256,291 L256,339 L132,410" />
+</vector>
\ No newline at end of file
diff --git a/images/android-vector-drawable/heroku.xml b/images/android-vector-drawable/heroku.xml
new file mode 100644
index 00000000..5be6e06c
--- /dev/null
+++ b/images/android-vector-drawable/heroku.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="512dp"
+    android:height="512dp"
+    android:viewportWidth="512"
+    android:viewportHeight="512">
+
+    <path
+        android:fillColor="#000000"
+        android:pathData="M15,0 L497,0 Q512,0,512,15 L512,497 Q512,512,497,512 L15,512 Q0,512,0,497 L0,15 Q0,0,15,0 Z" />
+    <path
+        android:fillColor="#000000"
+        android:strokeColor="#fff"
+        android:strokeWidth="16"
+        android:pathData="M367,99 L145,99 C123,99,115,107,115,129 L115,383 C115,405,123,413,145,413 L367,413 C389,413,397,405,397,383 L397,129 C397,107,388,99,367,99" />
+    <path
+        android:fillColor="#fff"
+        android:pathData="M182,284 C238,256,276,253,289,259 C298,263,298,274,298,274 L298,373 L331,373 L331,273 S330,241,304,229 S242,228,216,235 L216,140 L182,140 M306,194 S328,172,331,140 L297,140 C292,169,272,194,272,194 M182,372 L219,339 L182,306" />
+</vector>
\ No newline at end of file
diff --git a/images/reference/Backbone_js_logo.svg b/images/reference/Backbone_js_logo.svg
new file mode 100644
index 00000000..6ddd969c
--- /dev/null
+++ b/images/reference/Backbone_js_logo.svg
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   version="1.1"
+   width="900"
+   height="161"
+   id="svg2">
+  <defs
+     id="defs4" />
+  <metadata
+     id="metadata7">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     transform="translate(129.47008,-1148.7329)"
+     id="layer1">
+    <g
+       transform="matrix(0.17893165,0,0,0.17893165,-129.37356,1149.0013)"
+       id="Page 1"
+       style="fill:#d8d8d8;fill-rule:evenodd">
+      <g
+         id="BackBone.JS">
+        <path
+           d="M 0,0 0,485 361,690.78502 361,550.90277 119.49609,413.23549 119.49609,197 361,334.66728 361,205.78502 0,0 z m 0,0"
+           id="Path"
+           style="fill:#002a41;stroke:#848484;stroke-width:1" />
+        <path
+           d="M 722,0 722,485 361,690.78502 361,550.90277 602.50391,413.23549 602.50391,197 361,334.66728 361,205.78502 722,0 z m 0,0"
+           id="path2996"
+           style="fill:#0071b5;stroke:#848484;stroke-width:1" />
+        <path
+           d="m 0,896.78502 0,-485 L 361,206 l 0,139.88225 -241.50391,137.66728 0,205.23549 L 361,551.11775 361,691 0,896.78502 z m 0,0"
+           id="path2998"
+           style="fill:#0071b5;stroke:#848484;stroke-width:1" />
+        <path
+           d="m 722,896.78502 0,-485 L 361,206 l 0,139.88225 241.50391,137.66728 0,205.23549 L 361,551.11775 361,691 722,896.78502 z m 0,0"
+           id="path3000"
+           style="fill:#002a41;stroke:#848484;stroke-width:1" />
+      </g>
+    </g>
+  </g>
+</svg>
diff --git a/images/reference/heroku-logo-stroke-white.png b/images/reference/heroku-logo-stroke-white.png
new file mode 100644
index 00000000..3e305439
Binary files /dev/null and b/images/reference/heroku-logo-stroke-white.png differ
diff --git a/images/reference/index.md b/images/reference/index.md
index f37033bc..50956d81 100644
--- a/images/reference/index.md
+++ b/images/reference/index.md
@@ -141,3 +141,5 @@ Where possible this links to the organisation's brand guidelines page.
 | <img src="/images/svg/imdb.svg" width="256" /> | <img src="/images/reference/imdb.svg" width="256" />  | https://imdb.com/ |
 | <img src="/images/svg/nhs.svg" width="256" /> | <img src="/images/reference/nhs-logo-digital-space.jpg" width="256" />  | https://www.england.nhs.uk/nhsidentity/identity-guidelines/nhs-logo/ |
 | <img src="/images/svg/yarn.svg" width="256" /> | <img src="/images/reference/yarn_pkg.svg" width="256" />  | https://yarnpkg.com/en/ |
+| <img src="/images/svg/backbone.svg" width="256" /> | <img src="/images/reference/Backbone_js_logo.svg" width="256" />  | https://backbonejs.org/ |
+| <img src="/images/svg/heroku.svg" width="256" /> | <img src="/images/reference/heroku-logo-stroke-white.png" width="256" />  | https://brand.heroku.com/ |
diff --git a/images/svg/backbone.svg b/images/svg/backbone.svg
new file mode 100644
index 00000000..f67e1377
--- /dev/null
+++ b/images/svg/backbone.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg"
+aria-label="Backbone" role="img"
+viewBox="0 0 512 512" fill="#0071b5"><rect
+width="512" height="512"
+rx="15%"
+fill="#fff"/><g stroke="#848484" stroke-width="2"><path d="M380 102v167l-124 70v-48l83-47v-74l-83 47v-44l124-71"/><path fill="#002a41" d="M132 102v167l124 70v-48l-83-47v-74l83 47v-44l-124-71M380 410V243l-124-70v48l83 47v71l-83-48v48l124 71"/><path d="M132 410V243l124-70v48l-83 47v71l83-48v48l-124 71"/></g></svg>
\ No newline at end of file
diff --git a/images/svg/heroku.svg b/images/svg/heroku.svg
new file mode 100755
index 00000000..ab392210
--- /dev/null
+++ b/images/svg/heroku.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg"
+aria-label="Heroku" role="img"
+viewBox="0 0 512 512" fill="#430098"><rect
+width="512" height="512"
+rx="15%"/><path d="M367 99H145c-22 0-30 8-30 30v254c0 22 8 30 30 30h222c22 0 30-8 30-30V129c0-22-9-30-30-30" stroke="#fff" stroke-width="16"/><path fill="#fff" d="M182 284c56-28 94-31 107-25 9 4 9 15 9 15v99h33V273s-1-32-27-44-62-1-88 6v-95h-34m124 54s22-22 25-54h-34c-5 29-25 54-25 54m-90 178l37-33-37-33"/></svg>
\ No newline at end of file