diff --git a/Aws4Signer/AWS4RequestSigner.cs b/Aws4Signer/AWS4RequestSigner.cs
index 9d17ab0..6a7a3ab 100644
--- a/Aws4Signer/AWS4RequestSigner.cs
+++ b/Aws4Signer/AWS4RequestSigner.cs
@@ -151,7 +151,7 @@ public async Task<HttpRequestMessage> Sign(HttpRequestMessage request, string se
 
         private static string GetCanonicalQueryParams(HttpRequestMessage request)
         {
-            var values = new SortedDictionary<string, IEnumerable<string>>();
+            var values = new SortedDictionary<string, IEnumerable<string>>(StringComparer.OrdinalIgnoreCase);
 
             var querystring = HttpUtility.ParseQueryString(request.RequestUri.Query);
             foreach (var key in querystring.AllKeys)
@@ -183,4 +183,4 @@ public void Dispose()
             _sha256.Dispose();
         }
     }
-}
\ No newline at end of file
+}
diff --git a/Aws4Signer/Aws4RequestSigner.csproj b/Aws4Signer/Aws4RequestSigner.csproj
index 76ded15..108e356 100644
--- a/Aws4Signer/Aws4RequestSigner.csproj
+++ b/Aws4Signer/Aws4RequestSigner.csproj
@@ -5,9 +5,9 @@
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <Authors />
     <Company />
-    <Version>1.0.1</Version>
-    <AssemblyVersion>1.0.1.0</AssemblyVersion>
-    <FileVersion>1.0.1.0</FileVersion>
+    <Version>1.0.2</Version>
+    <AssemblyVersion>1.0.2.0</AssemblyVersion>
+    <FileVersion>1.0.2.0</FileVersion>
     <PackageLicenseUrl>https://github.com/tsibelman/aws-signer-v4-dot-net/blob/master/LICENSE</PackageLicenseUrl>
     <PackageProjectUrl>https://github.com/tsibelman/aws-signer-v4-dot-net</PackageProjectUrl>
     <PackageIconUrl></PackageIconUrl>