diff --git a/Directory.Packages.props b/Directory.Packages.props
index be4a568..ce1c87f 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -6,7 +6,7 @@
 
   <ItemGroup>
     <PackageVersion Include="DocumentFormat.OpenXml" Version="3.5.1" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.11.0" />
     <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="4.0.0" />
   </ItemGroup>
diff --git a/tests/CellSharp.Tests/packages.lock.json b/tests/CellSharp.Tests/packages.lock.json
index a1c6dea..c94ebc6 100644
--- a/tests/CellSharp.Tests/packages.lock.json
+++ b/tests/CellSharp.Tests/packages.lock.json
@@ -13,12 +13,12 @@
       },
       "Microsoft.NET.Test.Sdk": {
         "type": "Direct",
-        "requested": "[18.10.1, )",
-        "resolved": "18.10.1",
-        "contentHash": "SxCFvJE/2ltUQgCgv6+Ixagohw4sZc9hM7Wid2foaNM7paBscktoHLoRDz91fW8wbHG87Rg9Ku59/8PXumqUrA==",
+        "requested": "[18.11.0, )",
+        "resolved": "18.11.0",
+        "contentHash": "xf/bR0LNkhK0SnadDRlZIQmC4sac5Wk0e1WAdiQjRN3MSo6gQ9M2c4c1XRNnVGjfOvckh704W5CJ19AL0/Xsdg==",
         "dependencies": {
-          "Microsoft.CodeCoverage": "18.10.1",
-          "Microsoft.TestPlatform.TestHost": "18.10.1"
+          "Microsoft.CodeCoverage": "18.11.0",
+          "Microsoft.TestPlatform.TestHost": "18.11.0"
         }
       },
       "xunit": {
@@ -48,20 +48,20 @@
       },
       "Microsoft.CodeCoverage": {
         "type": "Transitive",
-        "resolved": "18.10.1",
-        "contentHash": "tV7tCyp/t+DuwQugLkCeUN7NBFFB4fEGRPr0gkMQ2nQgAvQQjmGlZZi1dsLzbyoe/A0mbnKybmkIh8qhT9p4Zw=="
+        "resolved": "18.11.0",
+        "contentHash": "MhN9wpvL1Es4hfIYslrsVgIsUdDFxuOBTbAl9mGIMvFo8PP5CLf4DrGdNrfwWSyn0lqi6sssm+I/qkkLL3MU+g=="
       },
       "Microsoft.TestPlatform.ObjectModel": {
         "type": "Transitive",
-        "resolved": "18.10.1",
-        "contentHash": "o+PuLDRVp1iwiVAPBADZItXgm9Ck23XtPhE4kZtZVi0uYnMiiz1Dx9Cjh75kJ+ijfqnORL3VOTOaQVKi0f/ixg=="
+        "resolved": "18.11.0",
+        "contentHash": "BXBHYnwSOljKute8UYCMXOLAdB7awxEMppPSpqOF1ZxLD/W/OH+vTBgFaXA7q0aditJTVXSMVenel+wOkEIyNg=="
       },
       "Microsoft.TestPlatform.TestHost": {
         "type": "Transitive",
-        "resolved": "18.10.1",
-        "contentHash": "KYz2omqkoz9E2mWa4fdgT+Ycie1wi5968EmyJlusjlp87RxxtA2FvDm8tcBEYIDzLnkWGnsKjE4d13Z7/rxkQA==",
+        "resolved": "18.11.0",
+        "contentHash": "AKjwKpyRBwoQFQmpcchtoYlfJEBlaY/40uxBRi+qXP4NR7xT8t+XTJtOyEyumfvfJcH5pASs75LwNdXYRr4XNA==",
         "dependencies": {
-          "Microsoft.TestPlatform.ObjectModel": "18.10.1"
+          "Microsoft.TestPlatform.ObjectModel": "18.11.0"
         }
       },
       "System.IO.Packaging": {