diff --git a/src/chocolatey/infrastructure.app/services/NugetService.cs b/src/chocolatey/infrastructure.app/services/NugetService.cs
index 8a4477c4c8..18eb81056d 100644
--- a/src/chocolatey/infrastructure.app/services/NugetService.cs
+++ b/src/chocolatey/infrastructure.app/services/NugetService.cs
@@ -86,7 +86,7 @@ public void list_noop(ChocolateyConfiguration config)
 
         public ConcurrentDictionary<string, PackageResult> list_run(ChocolateyConfiguration config, bool logResults = true)
         {
-            var packageResults = new ConcurrentDictionary<string, PackageResult>();
+            var packageResults = new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
 
             var packages = NugetList.GetPackages(config, _nugetLogger).ToList();
 
@@ -239,7 +239,7 @@ public void install_noop(ChocolateyConfiguration config, Action<PackageResult> c
         public ConcurrentDictionary<string, PackageResult> install_run(ChocolateyConfiguration config, Action<PackageResult> continueAction)
         {
             _fileSystem.create_directory_if_not_exists(ApplicationParameters.PackagesLocation);
-            var packageInstalls = new ConcurrentDictionary<string, PackageResult>();
+            var packageInstalls = new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
 
             //todo: handle all
 
@@ -404,7 +404,7 @@ public ConcurrentDictionary<string, PackageResult> upgrade_run(ChocolateyConfigu
         public ConcurrentDictionary<string, PackageResult> upgrade_run(ChocolateyConfiguration config, Action<PackageResult> continueAction, bool performAction)
         {
             _fileSystem.create_directory_if_not_exists(ApplicationParameters.PackagesLocation);
-            var packageInstalls = new ConcurrentDictionary<string, PackageResult>();
+            var packageInstalls = new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
 
             SemanticVersion version = config.Version != null ? new SemanticVersion(config.Version) : null;
             var packageManager = NugetCommon.GetPackageManager(
@@ -754,7 +754,7 @@ public ConcurrentDictionary<string, PackageResult> uninstall_run(ChocolateyConfi
 
         public ConcurrentDictionary<string, PackageResult> uninstall_run(ChocolateyConfiguration config, Action<PackageResult> continueAction, bool performAction)
         {
-            var packageUninstalls = new ConcurrentDictionary<string, PackageResult>();
+            var packageUninstalls = new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
 
             SemanticVersion version = config.Version != null ? new SemanticVersion(config.Version) : null;
             var packageManager = NugetCommon.GetPackageManager(config, _nugetLogger,
diff --git a/src/chocolatey/infrastructure.app/services/RubyGemsService.cs b/src/chocolatey/infrastructure.app/services/RubyGemsService.cs
index bb922cd9c0..c2bf31b382 100644
--- a/src/chocolatey/infrastructure.app/services/RubyGemsService.cs
+++ b/src/chocolatey/infrastructure.app/services/RubyGemsService.cs
@@ -132,7 +132,7 @@ public void list_noop(ChocolateyConfiguration config)
 
         public ConcurrentDictionary<string, PackageResult> list_run(ChocolateyConfiguration config, bool logResults)
         {
-            var packageResults = new ConcurrentDictionary<string, PackageResult>();
+            var packageResults = new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
             var args = ExternalCommandArgsBuilder.build_arguments(config, _listArguments);
             
             Environment.ExitCode = _commandExecutor.execute(
@@ -172,7 +172,7 @@ public void install_noop(ChocolateyConfiguration config, Action<PackageResult> c
 
         public ConcurrentDictionary<string, PackageResult> install_run(ChocolateyConfiguration config, Action<PackageResult> continueAction)
         {
-            var packageResults = new ConcurrentDictionary<string, PackageResult>();
+            var packageResults = new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
             var args = ExternalCommandArgsBuilder.build_arguments(config, _installArguments);
 
             foreach (var packageToInstall in config.PackageNames.Split(new[] {' '}, StringSplitOptions.RemoveEmptyEntries))
@@ -236,7 +236,7 @@ public ConcurrentDictionary<string, PackageResult> install_run(ChocolateyConfigu
         public ConcurrentDictionary<string, PackageResult> upgrade_noop(ChocolateyConfiguration config, Action<PackageResult> continueAction)
         {
             this.Log().Warn(ChocolateyLoggers.Important, "{0} does not implement upgrade".format_with(APP_NAME));
-            return new ConcurrentDictionary<string, PackageResult>();
+            return new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
         }
 
         public ConcurrentDictionary<string, PackageResult> upgrade_run(ChocolateyConfiguration config, Action<PackageResult> continueAction)
diff --git a/src/chocolatey/infrastructure.app/services/WebPiService.cs b/src/chocolatey/infrastructure.app/services/WebPiService.cs
index 1f880e30c4..a04e2f027d 100644
--- a/src/chocolatey/infrastructure.app/services/WebPiService.cs
+++ b/src/chocolatey/infrastructure.app/services/WebPiService.cs
@@ -128,7 +128,7 @@ public void list_noop(ChocolateyConfiguration config)
 
         public ConcurrentDictionary<string, PackageResult> list_run(ChocolateyConfiguration config, bool logResults)
         {
-            var packageResults = new ConcurrentDictionary<string, PackageResult>();
+            var packageResults = new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
             var args = ExternalCommandArgsBuilder.build_arguments(config, _listArguments);
 
             //var whereToStartRecording = "---";
@@ -185,7 +185,7 @@ public void install_noop(ChocolateyConfiguration config, Action<PackageResult> c
 
         public ConcurrentDictionary<string, PackageResult> install_run(ChocolateyConfiguration config, Action<PackageResult> continueAction)
         {
-            var packageResults = new ConcurrentDictionary<string, PackageResult>();
+            var packageResults = new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
             var args = ExternalCommandArgsBuilder.build_arguments(config, _installArguments);
 
             foreach (var packageToInstall in config.PackageNames.Split(new[] {' '}, StringSplitOptions.RemoveEmptyEntries))
@@ -242,7 +242,7 @@ public ConcurrentDictionary<string, PackageResult> install_run(ChocolateyConfigu
         public ConcurrentDictionary<string, PackageResult> upgrade_noop(ChocolateyConfiguration config, Action<PackageResult> continueAction)
         {
             this.Log().Warn(ChocolateyLoggers.Important, "{0} does not implement upgrade".format_with(APP_NAME));
-            return new ConcurrentDictionary<string, PackageResult>();
+            return new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
         }
 
         public ConcurrentDictionary<string, PackageResult> upgrade_run(ChocolateyConfiguration config, Action<PackageResult> continueAction)
diff --git a/src/chocolatey/infrastructure.app/services/WindowsFeatureService.cs b/src/chocolatey/infrastructure.app/services/WindowsFeatureService.cs
index ce91cdd8ae..46b18cafef 100644
--- a/src/chocolatey/infrastructure.app/services/WindowsFeatureService.cs
+++ b/src/chocolatey/infrastructure.app/services/WindowsFeatureService.cs
@@ -184,7 +184,7 @@ public ConcurrentDictionary<string, PackageResult> list_run(ChocolateyConfigurat
         {
             set_executable_path_if_not_set();
             var args = build_args(config, _listArguments);
-            var packageResults = new ConcurrentDictionary<string, PackageResult>();
+            var packageResults = new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
 
             Environment.ExitCode = _commandExecutor.execute(
                 _exePath,
@@ -249,7 +249,7 @@ public ConcurrentDictionary<string, PackageResult> install_run(ChocolateyConfigu
         {
             set_executable_path_if_not_set();
             var args = build_args(config, _installArguments);
-            var packageResults = new ConcurrentDictionary<string, PackageResult>();
+            var packageResults = new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
 
             foreach (var packageToInstall in config.PackageNames.Split(new[] {' '}, StringSplitOptions.RemoveEmptyEntries))
             {
@@ -311,7 +311,7 @@ public ConcurrentDictionary<string, PackageResult> upgrade_noop(ChocolateyConfig
         {
             set_executable_path_if_not_set();
             this.Log().Warn(ChocolateyLoggers.Important, "{0} does not implement upgrade".format_with(APP_NAME));
-            return new ConcurrentDictionary<string, PackageResult>();
+            return new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
         }
 
         public ConcurrentDictionary<string, PackageResult> upgrade_run(ChocolateyConfiguration config, Action<PackageResult> continueAction)
@@ -331,7 +331,7 @@ public ConcurrentDictionary<string, PackageResult> uninstall_run(ChocolateyConfi
         {
             set_executable_path_if_not_set();
             var args = build_args(config, _uninstallArguments);
-            var packageResults = new ConcurrentDictionary<string, PackageResult>();
+            var packageResults = new ConcurrentDictionary<string, PackageResult>(StringComparer.InvariantCultureIgnoreCase);
 
             foreach (var packageToInstall in config.PackageNames.Split(new[] {' '}, StringSplitOptions.RemoveEmptyEntries))
             {