diff --git a/src/mono/mono.proj b/src/mono/mono.proj
index e97f125443272..6d760bb391257 100644
--- a/src/mono/mono.proj
+++ b/src/mono/mono.proj
@@ -178,7 +178,7 @@
       <WasiLocalPath>$([MSBuild]::NormalizeDirectory('$(MSBuildThisFileDirectory)', 'wasi'))</WasiLocalPath>
       <WasiSdkVersion>%(_VersionLines.Identity)</WasiSdkVersion>
       <WasiSdkUrl>https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-$(WasiSdkVersion)/wasi-sdk-$(WasiSdkVersion).0-linux.tar.gz</WasiSdkUrl>
-      <WasiSdkUrl Condition="'$(HostOS)' == 'osx'" >https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-$(WasiSdkVersion)/wasi-sdk-$(WasiSdkVersion).0-linux.tar.gz</WasiSdkUrl>
+      <WasiSdkUrl Condition="'$(HostOS)' == 'osx'" >https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-$(WasiSdkVersion)/wasi-sdk-$(WasiSdkVersion).0-macos.tar.gz</WasiSdkUrl>
     </PropertyGroup>
 
     <RemoveDir Directories="$(WASI_SDK_PATH)" />
diff --git a/src/mono/sample/wasi/Directory.Build.targets b/src/mono/sample/wasi/Directory.Build.targets
index 92c9d2683527b..96c11d48de1ba 100644
--- a/src/mono/sample/wasi/Directory.Build.targets
+++ b/src/mono/sample/wasi/Directory.Build.targets
@@ -46,6 +46,7 @@
     <PropertyGroup>
       <WasmtimeVersion>%(_VersionLines.Identity)</WasmtimeVersion>
       <WasmtimeURL>https://github.com/bytecodealliance/wasmtime/releases/download/v$(WasmtimeVersion)/wasmtime-v$(WasmtimeVersion)-x86_64-linux.tar.xz</WasmtimeURL>
+      <WasmtimeURL Condition="'$(HostOS)' == 'osx'" >https://github.com/bytecodealliance/wasmtime/releases/download/v$(WasmtimeVersion)/wasmtime-v$(WasmtimeVersion)-x86_64-macos.tar.xz</WasmtimeURL>
     </PropertyGroup>
 
     <Exec WorkingDirectory="$(MonoProjectRoot)/wasi" Command="mkdir wasmtime &amp;&amp; curl -L -o- $(WasmtimeURL) | tar -Jxv --strip-components=1 -C wasmtime/ &amp;&amp; cp wasmtime-version.txt wasmtime/wasmtime-version.txt" />