diff --git a/package-versions.props b/package-versions.props
index bb86f2d6fc..dea972acbb 100644
--- a/package-versions.props
+++ b/package-versions.props
@@ -28,7 +28,7 @@
     <ScalarAspNetCoreVersion>2.9.*</ScalarAspNetCoreVersion>
     <SwashbuckleVersion>9.*-*</SwashbuckleVersion>
     <SystemTextJsonVersion>9.0.*</SystemTextJsonVersion>
-    <TestSdkVersion>17.14.*</TestSdkVersion>
+    <TestSdkVersion>18.0.*</TestSdkVersion>
     <XunitVersion>2.9.*</XunitVersion>
     <XunitVisualStudioVersion>3.1.*</XunitVisualStudioVersion>
   </PropertyGroup>
diff --git a/test/OpenApiTests/OpenApiTestContext.cs b/test/OpenApiTests/OpenApiTestContext.cs
index 5151e9a73a..16b7f26628 100644
--- a/test/OpenApiTests/OpenApiTestContext.cs
+++ b/test/OpenApiTests/OpenApiTestContext.cs
@@ -86,10 +86,25 @@ private static JsonElement ParseSwaggerDocument(string content)
 
     private static async Task WriteToDiskAsync(string path, JsonElement jsonElement)
     {
-        string directory = Path.GetDirectoryName(path)!;
-        Directory.CreateDirectory(directory);
-
-        string contents = jsonElement.ToString();
-        await File.WriteAllTextAsync(path, contents);
+        while (true)
+        {
+            try
+            {
+                string directory = Path.GetDirectoryName(path)!;
+                Directory.CreateDirectory(directory);
+
+                string contents = jsonElement.ToString();
+                await File.WriteAllTextAsync(path, contents);
+
+                return;
+            }
+            catch (IOException)
+            {
+                // This sometimes happens when running tests locally.
+                // Multi-targeted projects should not use the same output path.
+
+                await Task.Delay(TimeSpan.FromMilliseconds(50));
+            }
+        }
     }
 }
diff --git a/tests.runsettings b/tests.runsettings
index e6790c9356..a6309d7602 100644
--- a/tests.runsettings
+++ b/tests.runsettings
@@ -11,7 +11,7 @@
       <DataCollector friendlyName="XPlat Code Coverage">
         <Configuration>
           <ExcludeByFile>**/test/**/*.*</ExcludeByFile>
-          <Exclude>[*]JsonApiDotNetCore.OpenApi.JsonApiObjects.*</Exclude>
+          <Exclude>[*]JsonApiDotNetCore.OpenApi.Swashbuckle.JsonApiObjects.*</Exclude>
           <ExcludeByAttribute>ObsoleteAttribute,GeneratedCodeAttribute,TestSDKAutoGeneratedCode</ExcludeByAttribute>
           <DeterministicReport>true</DeterministicReport>
         </Configuration>