diff --git a/NuKeeper.Abstractions/RepositoryInspection/PackageUpdateSet.cs b/NuKeeper.Abstractions/RepositoryInspection/PackageUpdateSet.cs
index 29fff5268..6e6514209 100644
--- a/NuKeeper.Abstractions/RepositoryInspection/PackageUpdateSet.cs
+++ b/NuKeeper.Abstractions/RepositoryInspection/PackageUpdateSet.cs
@@ -59,12 +59,12 @@ public int CountCurrentVersions()
 
         private void CheckIdConsistency()
         {
-            if (CurrentPackages.Any(p => p.Id != SelectedId))
+            if (CurrentPackages.Any(p => !p.Id.Equals(SelectedId,StringComparison.InvariantCultureIgnoreCase)))
             {
                 var errorIds = CurrentPackages
                     .Select(p => p.Id)
                     .Distinct()
-                    .Where(id => id != SelectedId);
+                    .Where(id => !id.Equals(SelectedId,StringComparison.InvariantCultureIgnoreCase));
 
                 throw new ArgumentException($"Updates must all be for package '{SelectedId}', got '{errorIds.JoinWithCommas()}'");
             }
diff --git a/NuKeeper.Inspection/NuGetApi/PackageUpdatesLookup.cs b/NuKeeper.Inspection/NuGetApi/PackageUpdatesLookup.cs
index c0e737b0c..9f0aae060 100644
--- a/NuKeeper.Inspection/NuGetApi/PackageUpdatesLookup.cs
+++ b/NuKeeper.Inspection/NuGetApi/PackageUpdatesLookup.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
@@ -37,7 +38,7 @@ public PackageUpdatesLookup(IBulkPackageLookup bulkPackageLookup)
                 var matchVersion = latestPackage.Selected().Identity.Version;
 
                 var updatesForThisPackage = packages
-                    .Where(p => p.Id == packageId && p.Version < matchVersion)
+                    .Where(p => p.Id.Equals(packageId,StringComparison.InvariantCultureIgnoreCase) && p.Version < matchVersion)
                     .ToList();
 
                 if (updatesForThisPackage.Count > 0)
diff --git a/NuKeeper.Update/Process/UpdateDirectoryBuildTargetsCommand.cs b/NuKeeper.Update/Process/UpdateDirectoryBuildTargetsCommand.cs
index f594377df..6ac0f3fd1 100644
--- a/NuKeeper.Update/Process/UpdateDirectoryBuildTargetsCommand.cs
+++ b/NuKeeper.Update/Process/UpdateDirectoryBuildTargetsCommand.cs
@@ -1,3 +1,4 @@
+using System;
 using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
@@ -47,8 +48,8 @@ public UpdateDirectoryBuildTargetsCommand(INuKeeperLogger logger)
 
             var packageNodeList = packagesNode.Elements("PackageReference")
                 .Where(x =>
-                    (x.Attributes("Include").Any(a => a.Value == currentPackage.Id)
-                  || x.Attributes("Update").Any(a => a.Value == currentPackage.Id)));
+                    (x.Attributes("Include").Any(a => a.Value.Equals(currentPackage.Id, StringComparison.InvariantCultureIgnoreCase))
+                  || x.Attributes("Update").Any(a => a.Value.Equals(currentPackage.Id,StringComparison.InvariantCultureIgnoreCase))));
 
             foreach (var dependencyToUpdate in packageNodeList)
             {