diff --git a/03/GearRatios.Tests/GearRatios.Tests.csproj b/03/GearRatios.Tests/GearRatios.Tests.csproj
index d3b6c47..e0d4aab 100644
--- a/03/GearRatios.Tests/GearRatios.Tests.csproj
+++ b/03/GearRatios.Tests/GearRatios.Tests.csproj
@@ -27,4 +27,10 @@
     <ProjectReference Include="..\GearRatios\GearRatios.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Content Include="..\INPUT.txt">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+
 </Project>
diff --git a/03/GearRatios.Tests/PuzzleSolverTests.cs b/03/GearRatios.Tests/PuzzleSolverTests.cs
index 74c000e..5ad3dfd 100644
--- a/03/GearRatios.Tests/PuzzleSolverTests.cs
+++ b/03/GearRatios.Tests/PuzzleSolverTests.cs
@@ -36,6 +36,8 @@ public class PuzzleSolverTests
       ".664.598..",
     ];
 
+    private static readonly string[] Input = File.ReadAllLines("INPUT.txt");
+
     public static IEnumerable<object[]> SumGearRatios =>
       new List<object[]>
       {
@@ -44,6 +46,11 @@ public class PuzzleSolverTests
           TestSchematic,
           467835,
         },
+        new object[]
+        {
+          Input,
+          81997870,
+        }
       };
 
     public static IEnumerable<object?[]> SumPartNumbersData =>
@@ -84,6 +91,11 @@ public class PuzzleSolverTests
             "........375...%.........*......450.456.$.........714........851.327..#...+......*...+.......179.630....854.................................*",
           },
           11612
+        },
+        new object[]
+        {
+          Input,
+          550934,
         }
       };
   }