diff --git a/src/StaticWebAssetsSdk/Sdk/Sdk.StaticWebAssets.StaticAssets.ProjectSystem.props b/src/StaticWebAssetsSdk/Sdk/Sdk.StaticWebAssets.StaticAssets.ProjectSystem.props
index 7dd78e069ff1..d2e59f6b55e6 100644
--- a/src/StaticWebAssetsSdk/Sdk/Sdk.StaticWebAssets.StaticAssets.ProjectSystem.props
+++ b/src/StaticWebAssetsSdk/Sdk/Sdk.StaticWebAssets.StaticAssets.ProjectSystem.props
@@ -40,6 +40,9 @@ Copyright (c) .NET Foundation. All rights reserved.
     <Content Include="**\*.config" ExcludeFromSingleFile="true" CopyToPublishDirectory="PreserveNewest" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder);$(DefaultWebContentItemExcludes)" Condition="'$(ExcludeConfigFilesFromBuildOutput)'=='true'" />
     <Content Include="**\*.json" ExcludeFromSingleFile="true" CopyToPublishDirectory="PreserveNewest" Exclude="$(DefaultItemExcludes);$(DefaultExcludesInProjectFolder);$(DefaultWebContentItemExcludes)" Condition="'$(ExcludeConfigFilesFromBuildOutput)'=='true'" />
 
+    <!-- Avoid copying http-client.env.json to the output directory. -->
+    <Content Update="**\http-client.env.json" CopyToOutputDirectory="Never" CopyToPublishDirectory="Never" />
+
     <!-- Set CopyToPublishDirectory to Never for items under AppDesignerFolder ("Properties", by default) to avoid publishing launchSettings.json -->
     <Content Update="$(AppDesignerFolder)\**" CopyToPublishDirectory="Never" Condition="'$(AppDesignerFolder)' != ''"/>