diff --git a/ports/monkeys-audio/fix-C2471.patch b/ports/monkeys-audio/fix-C2471.patch
deleted file mode 100644
index 879d3372d5843f..00000000000000
--- a/ports/monkeys-audio/fix-C2471.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff --git a/Source/Projects/VS2019/MACDll/MACDll.vcxproj b/Source/Projects/VS2019/MACDll/MACDll.vcxproj
-index 4dfa820..7ac4bce 100644
---- a/Source/Projects/VS2019/MACDll/MACDll.vcxproj
-+++ b/Source/Projects/VS2019/MACDll/MACDll.vcxproj
-@@ -108,7 +108,7 @@
-       <TreatWChar_tAsBuiltInType>false</TreatWChar_tAsBuiltInType>
-       <PrecompiledHeader>Use</PrecompiledHeader>
-       <WarningLevel>Level3</WarningLevel>
--      <DebugInformationFormat>EditAndContinue</DebugInformationFormat>
-+      <DebugInformationFormat>OldStyle</DebugInformationFormat>
-     </ClCompile>
-     <ResourceCompile>
-       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/ports/monkeys-audio/portfile.cmake b/ports/monkeys-audio/portfile.cmake
index fee3f5b1c617ac..1375818ed1b102 100644
--- a/ports/monkeys-audio/portfile.cmake
+++ b/ports/monkeys-audio/portfile.cmake
@@ -1,12 +1,12 @@
 vcpkg_check_linkage(ONLY_DYNAMIC_LIBRARY ONLY_DYNAMIC_CRT)
 
-set(MA_VERSION 570)
+set(MA_VERSION 904)
 
 vcpkg_download_distfile(ARCHIVE
-    URLS "https://monkeysaudio.com/files/MAC_SDK_${MA_VERSION}.zip"
-         "https://web.archive.org/web/20201229182615if_/https://monkeysaudio.com/files/MAC_SDK_570.zip"
-    FILENAME "MAC_SDK_${MA_VERSION}.zip"
-    SHA512 d3b5a10574dde1ea90578959378b87f8a8c94b3cc7198bc51b86f7128d66117d706c191d56a699dce0c2a53b7722e0893cb614f96f9ad725a266a871da587fd4
+    URLS "https://monkeysaudio.com/files/MAC_${MA_VERSION}_SDK.zip"
+         "https://web.archive.org/web/20210129190227if_/https://monkeysaudio.com/files/MAC_SDK_607.zip"
+    FILENAME "MAC_${MA_VERSION}_SDK.zip"
+    SHA512 c42c9bae6690a28a69137445c84d53ad7acbd242c2cfe20f329fda46b56812c60de68874301d99cf72ade3bced90fc5aaedacb6fdbca241d4bf4806f6e238219
 )
 
 vcpkg_extract_source_archive(
@@ -16,7 +16,6 @@ vcpkg_extract_source_archive(
     PATCHES
         fix-project-config.patch
         remove-certificate-step.patch
-        fix-C2471.patch
 )
 
 file(REMOVE_RECURSE
diff --git a/ports/monkeys-audio/remove-certificate-step.patch b/ports/monkeys-audio/remove-certificate-step.patch
index 16fb24d2a7e694..118f9dbb343e44 100644
--- a/ports/monkeys-audio/remove-certificate-step.patch
+++ b/ports/monkeys-audio/remove-certificate-step.patch
@@ -1,23 +1,23 @@
---- a/Source/Projects/VS2019/Console/Console.vcxproj	2020-12-23 21:42:15.672211100 +0100
-+++ b/Source/Projects/VS2019/Console/Console.vcxproj	2020-12-29 05:29:53.916306700 +0100
-@@ -180,10 +180,6 @@
+diff --git a/Source/Projects/VS2019/Console/Console.vcxproj b/Source/Projects/VS2019/Console/Console.vcxproj
+index 3337a12..70c1942 100644
+--- a/Source/Projects/VS2019/Console/Console.vcxproj
++++ b/Source/Projects/VS2019/Console/Console.vcxproj
+@@ -180,9 +180,6 @@
        <DataExecutionPrevention />
        <TargetMachine>MachineX86</TargetMachine>
      </Link>
 -    <PostBuildEvent>
--      <Command>C:\MAC\Current\Source\Certificate\signtool.exe sign /t http://timestamp.digicert.com /f C:\MAC\Current\Source\Certificate\MAC3.pfx /p password /v "$(TargetPath)"
--C:\MAC\Current\Source\Certificate\signtool.exe sign /f C:\MAC\Current\Source\Certificate\MAC3.pfx /tr http://sha256timestamp.ws.symantec.com/sha256/timestamp /td sha256 /fd sha256 /a /as /p password "$(TargetPath)"</Command>
+-      <Command>C:\MAC\Current\Source\Certificate\signtool.exe sign /f C:\MAC\Current\Source\Certificate\MAC3.pfx /tr http://sha256timestamp.ws.symantec.com/sha256/timestamp /td sha256 /fd sha256 /a /as /p password "$(TargetPath)"</Command>
 -    </PostBuildEvent>
    </ItemDefinitionGroup>
    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
      <Midl>
-@@ -273,10 +269,6 @@
+@@ -272,9 +269,6 @@
        <DataExecutionPrevention />
        <TargetMachine>MachineX64</TargetMachine>
      </Link>
 -    <PostBuildEvent>
--      <Command>C:\MAC\Current\Source\Certificate\signtool.exe sign /t http://timestamp.digicert.com /f C:\MAC\Current\Source\Certificate\MAC3.pfx /p password /v "$(TargetPath)"
--C:\MAC\Current\Source\Certificate\signtool.exe sign /f C:\MAC\Current\Source\Certificate\MAC3.pfx /tr http://sha256timestamp.ws.symantec.com/sha256/timestamp /td sha256 /fd sha256 /a /as /p password "$(TargetPath)"</Command>
+-      <Command>C:\MAC\Current\Source\Certificate\signtool.exe sign /f C:\MAC\Current\Source\Certificate\MAC3.pfx /tr http://sha256timestamp.ws.symantec.com/sha256/timestamp /td sha256 /fd sha256 /a /as /p password "$(TargetPath)"</Command>
 -    </PostBuildEvent>
    </ItemDefinitionGroup>
    <ItemGroup>
diff --git a/ports/monkeys-audio/vcpkg.json b/ports/monkeys-audio/vcpkg.json
index 6df16d00c4aaa8..2f31c6cd1e0dd8 100644
--- a/ports/monkeys-audio/vcpkg.json
+++ b/ports/monkeys-audio/vcpkg.json
@@ -1,7 +1,6 @@
 {
   "name": "monkeys-audio",
-  "version": "5.70",
-  "port-version": 3,
+  "version-string": "9.04",
   "description": [
     "Monkey's Audio is an excellent audio compression tool which has multiple advantages over traditional methods.",
     "Audio files compressed with it end with .ape extension."
diff --git a/scripts/ci.baseline.txt b/scripts/ci.baseline.txt
index 2cb2573acdcb70..3000256efeb850 100644
--- a/scripts/ci.baseline.txt
+++ b/scripts/ci.baseline.txt
@@ -592,10 +592,6 @@ mmx:arm-uwp=skip
 mmx:x64-uwp=skip
 mmx:arm64-windows=skip
 monkeys-audio:arm64-windows=fail
-monkeys-audio:arm-uwp=fail
-monkeys-audio:x64-linux=fail
-monkeys-audio:x64-osx=fail
-monkeys-audio:x64-uwp=fail
 monkeys-audio:x64-windows-static=fail
 moos-core:arm-uwp=fail
 moos-core:x64-uwp=fail
diff --git a/versions/baseline.json b/versions/baseline.json
index c610ae1196f261..720d36976c95ed 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -5113,8 +5113,8 @@
       "port-version": 0
     },
     "monkeys-audio": {
-      "baseline": "5.70",
-      "port-version": 3
+      "baseline": "9.04",
+      "port-version": 0
     },
     "moos-core": {
       "baseline": "10.4.0",
diff --git a/versions/m-/monkeys-audio.json b/versions/m-/monkeys-audio.json
index 84acb3cca9ce75..e0f86ce77d83ff 100644
--- a/versions/m-/monkeys-audio.json
+++ b/versions/m-/monkeys-audio.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "ae5b8fee2db96b691e609427278a6974180e68d4",
+      "version-string": "9.04",
+      "port-version": 0
+    },
     {
       "git-tree": "029d9c14ce64feb48e15e8cd11b1a3123d016c62",
       "version": "5.70",