diff --git a/Directory.Packages.props b/Directory.Packages.props
index b13812f..12aecdb 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -20,7 +20,7 @@
          project shares the one stack so the headless and plain tests run the same way. -->
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.9.0" />
     <PackageVersion Include="coverlet.collector" Version="10.1.0" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="4.0.1" />
     <PackageVersion Include="xunit.v3" Version="3.2.2" />
   </ItemGroup>
 </Project>
diff --git a/tests/Freizeichen.App.Tests/packages.lock.json b/tests/Freizeichen.App.Tests/packages.lock.json
index cb7c786..18e3f7d 100644
--- a/tests/Freizeichen.App.Tests/packages.lock.json
+++ b/tests/Freizeichen.App.Tests/packages.lock.json
@@ -60,9 +60,9 @@
       },
       "xunit.runner.visualstudio": {
         "type": "Direct",
-        "requested": "[3.1.5, )",
-        "resolved": "3.1.5",
-        "contentHash": "tKi7dSTwP4m5m9eXPM2Ime4Kn7xNf4x4zT9sdLO/G4hZVnQCRiMTWoSZqI/pYTVeI27oPPqHBKYI/DjJ9GsYgA=="
+        "requested": "[4.0.1, )",
+        "resolved": "4.0.1",
+        "contentHash": "8CoAaZkniVekR1ycJyxn+hOz+6ZQCDPcoIsIs6ujd4WyFcBMlxGNU15Qb8Uxd4iO4UmOuETb0M6vzBbwX/mfLA=="
       },
       "xunit.v3": {
         "type": "Direct",
diff --git a/tests/Freizeichen.AppLogic.Tests/packages.lock.json b/tests/Freizeichen.AppLogic.Tests/packages.lock.json
index fdcbab4..bc9a05c 100644
--- a/tests/Freizeichen.AppLogic.Tests/packages.lock.json
+++ b/tests/Freizeichen.AppLogic.Tests/packages.lock.json
@@ -35,9 +35,9 @@
       },
       "xunit.runner.visualstudio": {
         "type": "Direct",
-        "requested": "[3.1.5, )",
-        "resolved": "3.1.5",
-        "contentHash": "tKi7dSTwP4m5m9eXPM2Ime4Kn7xNf4x4zT9sdLO/G4hZVnQCRiMTWoSZqI/pYTVeI27oPPqHBKYI/DjJ9GsYgA=="
+        "requested": "[4.0.1, )",
+        "resolved": "4.0.1",
+        "contentHash": "8CoAaZkniVekR1ycJyxn+hOz+6ZQCDPcoIsIs6ujd4WyFcBMlxGNU15Qb8Uxd4iO4UmOuETb0M6vzBbwX/mfLA=="
       },
       "xunit.v3": {
         "type": "Direct",
diff --git a/tests/Freizeichen.Domain.Tests/packages.lock.json b/tests/Freizeichen.Domain.Tests/packages.lock.json
index 3817e38..ed02f30 100644
--- a/tests/Freizeichen.Domain.Tests/packages.lock.json
+++ b/tests/Freizeichen.Domain.Tests/packages.lock.json
@@ -29,9 +29,9 @@
       },
       "xunit.runner.visualstudio": {
         "type": "Direct",
-        "requested": "[3.1.5, )",
-        "resolved": "3.1.5",
-        "contentHash": "tKi7dSTwP4m5m9eXPM2Ime4Kn7xNf4x4zT9sdLO/G4hZVnQCRiMTWoSZqI/pYTVeI27oPPqHBKYI/DjJ9GsYgA=="
+        "requested": "[4.0.1, )",
+        "resolved": "4.0.1",
+        "contentHash": "8CoAaZkniVekR1ycJyxn+hOz+6ZQCDPcoIsIs6ujd4WyFcBMlxGNU15Qb8Uxd4iO4UmOuETb0M6vzBbwX/mfLA=="
       },
       "xunit.v3": {
         "type": "Direct",
diff --git a/tests/Freizeichen.Modem.Tests/packages.lock.json b/tests/Freizeichen.Modem.Tests/packages.lock.json
index 49b51fa..4f61b05 100644
--- a/tests/Freizeichen.Modem.Tests/packages.lock.json
+++ b/tests/Freizeichen.Modem.Tests/packages.lock.json
@@ -35,9 +35,9 @@
       },
       "xunit.runner.visualstudio": {
         "type": "Direct",
-        "requested": "[3.1.5, )",
-        "resolved": "3.1.5",
-        "contentHash": "tKi7dSTwP4m5m9eXPM2Ime4Kn7xNf4x4zT9sdLO/G4hZVnQCRiMTWoSZqI/pYTVeI27oPPqHBKYI/DjJ9GsYgA=="
+        "requested": "[4.0.1, )",
+        "resolved": "4.0.1",
+        "contentHash": "8CoAaZkniVekR1ycJyxn+hOz+6ZQCDPcoIsIs6ujd4WyFcBMlxGNU15Qb8Uxd4iO4UmOuETb0M6vzBbwX/mfLA=="
       },
       "xunit.v3": {
         "type": "Direct",