diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ef8d1be..1e99ac0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -24,7 +24,7 @@ jobs:
       run: |
            set -ex
            cd circle-stdlib/libs/circle
-           git checkout a8e8c9f # develop
+           git checkout 646c362 # develop
            cd -
     - name: Install toolchains
       run: |
diff --git a/src/serialmididevice.cpp b/src/serialmididevice.cpp
index e3b383d..186efc3 100644
--- a/src/serialmididevice.cpp
+++ b/src/serialmididevice.cpp
@@ -49,7 +49,12 @@ CSerialMIDIDevice::~CSerialMIDIDevice (void)
 boolean CSerialMIDIDevice::Initialize (void)
 {
 	assert (m_pConfig);
-	return m_Serial.Initialize (m_pConfig->GetMIDIBaudRate ());
+	boolean res = m_Serial.Initialize (m_pConfig->GetMIDIBaudRate ());
+	unsigned ser_options = m_Serial.GetOptions();
+	// Ensure CR->CRLF translation is disabled for MIDI links
+	ser_options &= ~(SERIAL_OPTION_ONLCR);
+	m_Serial.SetOptions(ser_options);
+	return res;
 }
 
 void CSerialMIDIDevice::Process (void)