diff --git a/README.md b/README.md
index 4eebf3387..b48aa8987 100644
--- a/README.md
+++ b/README.md
@@ -32,9 +32,7 @@ More information about Thread can be found at [threadgroup.org](http://threadgro
 
 # Who supports OpenThread?
 
-Led by Nest, the following companies are contributing to the ongoing development of OpenThread:
-
-<a href="https://developer.android.com/things/index.html"><img src="doc/images/ot-contrib-at.png" alt="Android Things" width="200px"></a><a href="https://www.arm.com/"><img src="doc/images/ot-contrib-arm.png" alt="ARM" width="200px"></a><a href="http://www.dialog-semiconductor.com/"><img src="doc/images/ot-contrib-dialog.png" alt="Dialog" width="200px"></a><a href="https://www.microsoft.com/en-us/"><img src="doc/images/ot-contrib-ms.png" alt="Microsoft" width="200px"></a><br /><a href="https://nest.com/"><img src="doc/images/ot-contrib-nest.png" alt="Nest" width="200px"></a><a href="http://www.nordicsemi.com/"><img src="doc/images/ot-contrib-nordic.png" alt="Nordic" width="200px"></a><a href="http://www.nxp.com/"><img src="doc/images/ot-contrib-nxp.png" alt="NXP" width="200px"></a><a href="http://www.qorvo.com/"><img src="doc/images/ot-contrib-qorvo.png" alt="Qorvo" width="200px"></a><br /><a href="https://www.qualcomm.com/"><img src="doc/images/ot-contrib-qc.png" alt="Qualcomm" width="200px"></a><a href="https://www.synopsys.com/"><img src="doc/images/ot-contrib-synopsys.png" alt="Synopsys" width="200px"></a><a href="https://www.ti.com/"><img src="doc/images/ot-contrib-ti.png" alt="Texas Instruments" width="200px"></a><a href="https://www.zephyrproject.org/"><img src="doc/images/ot-contrib-zephyr.png" alt="Zephyr Project" width="200px"></a>
+<a href="https://www.arm.com/"><img src="doc/images/ot-contrib-arm.png" alt="ARM" width="200px"></a><a href="http://www.dialog-semiconductor.com/"><img src="doc/images/ot-contrib-dialog.png" alt="Dialog" width="200px"></a><a href="https://www.microsoft.com/en-us/"><img src="doc/images/ot-contrib-ms.png" alt="Microsoft" width="200px"></a><a href="https://nest.com/"><img src="doc/images/ot-contrib-nest.png" alt="Nest" width="200px"></a><br /><a href="http://www.nordicsemi.com/"><img src="doc/images/ot-contrib-nordic.png" alt="Nordic" width="200px"></a><a href="http://www.nxp.com/"><img src="doc/images/ot-contrib-nxp.png" alt="NXP" width="200px"></a><a href="https://www.particle.io/"><img src="doc/images/ot-contrib-particle.png" alt="Particle" width="200px"></a><a href="http://www.qorvo.com/"><img src="doc/images/ot-contrib-qorvo.png" alt="Qorvo" width="200px"></a><br /><a href="https://www.qualcomm.com/"><img src="doc/images/ot-contrib-qc.png" alt="Qualcomm" width="200px"></a><a href="https://www.synopsys.com/"><img src="doc/images/ot-contrib-synopsys.png" alt="Synopsys" width="200px"></a><a href="https://www.ti.com/"><img src="doc/images/ot-contrib-ti.png" alt="Texas Instruments" width="200px"></a><a href="https://www.zephyrproject.org/"><img src="doc/images/ot-contrib-zephyr.png" alt="Zephyr Project" width="200px"></a>
 
 # Getting started
 
diff --git a/doc/Makefile.am b/doc/Makefile.am
index a8d25eb13..c2e34b8c3 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -34,12 +34,12 @@ EXTRA_DIST                                      = \
     $(srcdir)/images/Open-Thread-Logo-200x42.png  \
     $(srcdir)/images/openthread_logo.png          \
     $(srcdir)/images/ot-contrib-arm.png           \
-    $(srcdir)/images/ot-contrib-at.png            \
     $(srcdir)/images/ot-contrib-dialog.png        \
     $(srcdir)/images/ot-contrib-ms.png            \
     $(srcdir)/images/ot-contrib-nest.png          \
     $(srcdir)/images/ot-contrib-nordic.png        \
     $(srcdir)/images/ot-contrib-nxp.png           \
+    $(srcdir)/images/ot-contrib-particle.png      \
     $(srcdir)/images/ot-contrib-qc.png            \
     $(srcdir)/images/ot-contrib-qorvo.png         \
     $(srcdir)/images/ot-contrib-synopsys.png      \
diff --git a/doc/images/ot-contrib-at.png b/doc/images/ot-contrib-at.png
deleted file mode 100644
index 438a4a0f3..000000000
Binary files a/doc/images/ot-contrib-at.png and /dev/null differ
diff --git a/doc/images/ot-contrib-particle.png b/doc/images/ot-contrib-particle.png
new file mode 100644
index 000000000..bf5ffc537
Binary files /dev/null and b/doc/images/ot-contrib-particle.png differ