diff --git a/BullseyeSmokeTester.McMaster/BullseyeSmokeTester.McMaster.csproj b/BullseyeSmokeTester.McMaster/BullseyeSmokeTester.McMaster.csproj
index 16dd77d4..b99d3730 100644
--- a/BullseyeSmokeTester.McMaster/BullseyeSmokeTester.McMaster.csproj
+++ b/BullseyeSmokeTester.McMaster/BullseyeSmokeTester.McMaster.csproj
@@ -14,7 +14,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="McMaster.Extensions.CommandLineUtils" Version="4.1.1" />
+    <PackageReference Include="McMaster.Extensions.CommandLineUtils" Version="5.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/BullseyeSmokeTester.McMaster/packages.lock.json b/BullseyeSmokeTester.McMaster/packages.lock.json
index 3a1f40cb..abb6963b 100644
--- a/BullseyeSmokeTester.McMaster/packages.lock.json
+++ b/BullseyeSmokeTester.McMaster/packages.lock.json
@@ -4,12 +4,9 @@
     "net10.0": {
       "McMaster.Extensions.CommandLineUtils": {
         "type": "Direct",
-        "requested": "[4.1.1, )",
-        "resolved": "4.1.1",
-        "contentHash": "zxgDY+G5yVq2q8sVB3Z275Qkxed1jC95nwAfnlSyoG4l5Nicvd4+ke1jXusEZEfyuErlAgXCKS937c13FmZWBg==",
-        "dependencies": {
-          "System.ComponentModel.Annotations": "5.0.0"
-        }
+        "requested": "[5.0.0, )",
+        "resolved": "5.0.0",
+        "contentHash": "f/oIMg5kL+MmY29jFfWJ8Bv9EzDQidN+eJVN2Fb2e5o2u9zN0QXLVOgxoXLbZLUxOzBmZbuhd+ArAt6amducYw=="
       },
       "Microsoft.VisualStudio.Threading.Analyzers": {
         "type": "Direct",
@@ -17,11 +14,6 @@
         "resolved": "17.14.15",
         "contentHash": "mXQPJsbuUD2ydq4/ffd8h8tSOFCXec+2xJOVNCvXjuMOq/+5EKHq3D2m2MC2+nUaXeFMSt66VS/J4HdKBixgcw=="
       },
-      "System.ComponentModel.Annotations": {
-        "type": "Transitive",
-        "resolved": "5.0.0",
-        "contentHash": "dMkqfy2el8A8/I76n2Hi1oBFEbG1SfxD2l5nhwXV3XjlnOmwxJlQbYpJH4W51odnU9sARCSAgv7S3CyAFMkpYg=="
-      },
       "bullseye": {
         "type": "Project"
       }