diff --git a/README.rst b/README.rst
index 47160284..3304d742 100644
--- a/README.rst
+++ b/README.rst
@@ -1,7 +1,7 @@
 USB Audio Shared
 ................
 
-:Latest release: 6.6.0rc0
+:Latest release: 6.6.0rc1
 :Maintainer: xross
 :Description: USB Audio Shared Components. For use in the XMOS USB Audio Refererence Designs.
 
diff --git a/module_dfu/.xproject b/module_dfu/.xproject
index 96775aaf..d80aba33 100644
--- a/module_dfu/.xproject
+++ b/module_dfu/.xproject
@@ -1 +1 @@
-<?xml version="1.0" encoding="UTF-8"?><xproject><repository>sc_usb_audio</repository><partnum>XM-004720-SM</partnum><version>6.6.0beta1</version></xproject>
\ No newline at end of file
+<?xml version="1.0" encoding="UTF-8"?><xproject><repository>sc_usb_audio</repository><partnum>XM-004720-SM</partnum></xproject>
\ No newline at end of file
diff --git a/module_queue/.xproject b/module_queue/.xproject
index 96775aaf..d80aba33 100644
--- a/module_queue/.xproject
+++ b/module_queue/.xproject
@@ -1 +1 @@
-<?xml version="1.0" encoding="UTF-8"?><xproject><repository>sc_usb_audio</repository><partnum>XM-004720-SM</partnum><version>6.6.0beta1</version></xproject>
\ No newline at end of file
+<?xml version="1.0" encoding="UTF-8"?><xproject><repository>sc_usb_audio</repository><partnum>XM-004720-SM</partnum></xproject>
\ No newline at end of file
diff --git a/module_usb_audio/.xproject b/module_usb_audio/.xproject
index 96775aaf..d80aba33 100644
--- a/module_usb_audio/.xproject
+++ b/module_usb_audio/.xproject
@@ -1 +1 @@
-<?xml version="1.0" encoding="UTF-8"?><xproject><repository>sc_usb_audio</repository><partnum>XM-004720-SM</partnum><version>6.6.0beta1</version></xproject>
\ No newline at end of file
+<?xml version="1.0" encoding="UTF-8"?><xproject><repository>sc_usb_audio</repository><partnum>XM-004720-SM</partnum></xproject>
\ No newline at end of file
diff --git a/module_usb_audio_adat/.xproject b/module_usb_audio_adat/.xproject
index 96775aaf..d80aba33 100644
--- a/module_usb_audio_adat/.xproject
+++ b/module_usb_audio_adat/.xproject
@@ -1 +1 @@
-<?xml version="1.0" encoding="UTF-8"?><xproject><repository>sc_usb_audio</repository><partnum>XM-004720-SM</partnum><version>6.6.0beta1</version></xproject>
\ No newline at end of file
+<?xml version="1.0" encoding="UTF-8"?><xproject><repository>sc_usb_audio</repository><partnum>XM-004720-SM</partnum></xproject>
\ No newline at end of file
diff --git a/module_usb_midi/.xproject b/module_usb_midi/.xproject
index 96775aaf..d80aba33 100644
--- a/module_usb_midi/.xproject
+++ b/module_usb_midi/.xproject
@@ -1 +1 @@
-<?xml version="1.0" encoding="UTF-8"?><xproject><repository>sc_usb_audio</repository><partnum>XM-004720-SM</partnum><version>6.6.0beta1</version></xproject>
\ No newline at end of file
+<?xml version="1.0" encoding="UTF-8"?><xproject><repository>sc_usb_audio</repository><partnum>XM-004720-SM</partnum></xproject>
\ No newline at end of file
diff --git a/xpd.xml b/xpd.xml
index 37b5a91a..f5784169 100644
--- a/xpd.xml
+++ b/xpd.xml
@@ -64,7 +64,8 @@
     <release parenthash = "2fe1d3cbf25c7cedf614d8cb84d4ce60cc6fda10" version = "6.5.1rc4" githash = "92918706a3c2212335bd8d34b5b8c905884bf6f1"></release>
     <release parenthash = "24ddedc6927fe3f8dc081df71c01805a4a4e0792" version = "6.6.0beta0" githash = "555e001e071008d804f7a8d03f1837b0b810c074"></release>
     <release parenthash = "ccf7c66588501a090ab25003f3d646b22c03b243" version = "6.6.0beta1" githash = "91c7bcff7a403fc9638bd05fcb4b63f75b7eccca"></release>
-    <release parenthash = "91c7bcff7a403fc9638bd05fcb4b63f75b7eccca" version = "6.6.0rc0"></release>
+    <release parenthash = "91c7bcff7a403fc9638bd05fcb4b63f75b7eccca" version = "6.6.0rc0" githash = "3a340d50732b31012b412d35598bbf311df2b914"></release>
+    <release parenthash = "d7f0cdd4be780869137968f00f1d2a46663a1f33" version = "6.6.0rc1"></release>
     <subpartnumber>XM-004720-SM</subpartnumber>
     <vendor>XMOS</vendor>
     <version_defines>