diff --git a/module_config.options b/module_config.options
index d2dd110..3ca66c8 100644
--- a/module_config.options
+++ b/module_config.options
@@ -4,3 +4,11 @@
 *MQTTConfig.address max_size:32
 *MQTTConfig.username max_size:64
 *MQTTConfig.password max_size:64
+
+*AudioConfig.mic_chan int_size:8
+*AudioConfig.amp_pin int_size:8
+*AudioConfig.ptt_pin int_size:8
+*AudioConfig.i2s_ws int_size:8
+*AudioConfig.i2s_sd int_size:8
+*AudioConfig.i2s_din int_size:8
+*AudioConfig.i2s_sck int_size:8
diff --git a/module_config.proto b/module_config.proto
index 1f4334c..013b2f9 100644
--- a/module_config.proto
+++ b/module_config.proto
@@ -99,6 +99,26 @@ message ModuleConfig {
      * The audio sample rate to use for codec2
      */
     Audio_Baud bitrate = 5;
+
+    /*
+     * I2S Word Select
+     */
+    uint32 i2s_ws = 6;
+
+    /*
+     * I2S Data IN
+     */
+    uint32 i2s_sd = 7;
+
+    /*
+     * I2S Data OUT
+     */
+    uint32 i2s_din = 8;
+
+    /*
+     * I2S Clock
+     */
+    uint32 i2s_sck = 9;
   }
 
   /*