diff --git a/src/Robware.Data.Tests/BlogRepositoryTests.cs b/src/Robware.Data.Tests/BlogRepositoryTests.cs
index 01d6798..b928982 100644
--- a/src/Robware.Data.Tests/BlogRepositoryTests.cs
+++ b/src/Robware.Data.Tests/BlogRepositoryTests.cs
@@ -21,7 +21,7 @@ namespace Robware.Data.Tests {
 			await repo.SavePost(post);
 			post.Id.Should().Be(11);
 			post.Timestamp.Should().BeCloseTo(DateTime.Now);
-			await collection.Received(1).InsertOneAsync(Arg.Any<BlogPostState>());
+			await collection.Received(1).ReplaceOneAsync(Arg.Any<FilterDefinition<BlogPostState>>(), Arg.Any<BlogPostState>(), Arg.Any<ReplaceOptions>());
 		}
 
 		[Fact]
@@ -37,7 +37,7 @@ namespace Robware.Data.Tests {
 			await repo.SavePost(post);
 			post.Id.Should().Be(1);
 			post.Timestamp.Should().Be(new DateTime());
-			await collection.Received(1).InsertOneAsync(Arg.Any<BlogPostState>());
+			await collection.Received(1).ReplaceOneAsync(Arg.Any<FilterDefinition<BlogPostState>>(), Arg.Any<BlogPostState>(), Arg.Any<ReplaceOptions>());
 		}
 
 		[Fact]