diff --git a/src/mono/wasm/build/WasmApp.Native.targets b/src/mono/wasm/build/WasmApp.Native.targets
index bf3a33b057d03..40832a13e833a 100644
--- a/src/mono/wasm/build/WasmApp.Native.targets
+++ b/src/mono/wasm/build/WasmApp.Native.targets
@@ -255,6 +255,7 @@
       <EmscriptenEnvVars Include="PYTHONPATH=$(EmscriptenPythonToolsPath)" Condition="'$(OS)' == 'Windows_NT'" />
       <EmscriptenEnvVars Include="PYTHONHOME=" Condition="'$(OS)' == 'Windows_NT'" />
       <EmscriptenEnvVars Include="EM_CACHE=$(WasmCachePath)" Condition="'$(WasmCachePath)' != ''" />
+      <EmscriptenEnvVars Include="EM_FROZEN_CACHE=True" />
       <EmscriptenEnvVars Include="WasmEnableLegacyJsInterop=$(WasmEnableLegacyJsInterop)"/>
     </ItemGroup>