diff --git a/index.html b/index.html
index 6f72a33fa36eec3b74eaed52066f9e82167e92c6..114a03cdc34e4a15807b3d986b84f73504e19427 100644
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+++ b/index.html
@@ -70,7 +70,7 @@ The GPIO test measures how quickly pins can communicate with a processor core; t
 <tr>
 <td>12.9</td>
 <td>RP2040</td>
-<td><a href=GPIO/RP2040/ring.RP2040.ino>Arduino, SIO/Fast, 250 MHz</a></td>
+<td><a href=GPIO/RP2040/ring.RP2040.ino>Arduino, SIO, 250 MHz</a></td>
 <td>December 2022</td>
 </tr>
 
@@ -95,6 +95,13 @@ The GPIO test measures how quickly pins can communicate with a processor core; t
 <td>December 2020</td>
 </tr>
 
+<tr>
+<td>3.79</td>
+<td>ESP32-C3</td>
+<td><a href=GPIO/ESP32/ring.ESP32C3.ino>Arduino, GPIO, 160 MHz</a></td>
+<td>December 2022</td>
+</tr>
+
 <tr>
 <td>3.74</td>
 <td>ATSAMD51</td>
@@ -165,6 +172,13 @@ The GPIO test measures how quickly pins can communicate with a processor core; t
 <td>November 2020</td>
 </tr>
 
+<tr>
+<td>.736</td>
+<td>ESP32-C3</td>
+<td><a href=GPIO/ESP32/ring.ESP32C3.ino>Arduino, digitalRead/Write, 160 MHz</a></td>
+<td>December 2022</td>
+</tr>
+
 <tr>
 <td>.350</td>
 <td>RP2040</td>