diff --git a/src/Akka.Persistence.Azure.Tests/AzurePersistenceConfigSpec.cs b/src/Akka.Persistence.Azure.Tests/AzurePersistenceConfigSpec.cs
index bd48dc6..52326d5 100644
--- a/src/Akka.Persistence.Azure.Tests/AzurePersistenceConfigSpec.cs
+++ b/src/Akka.Persistence.Azure.Tests/AzurePersistenceConfigSpec.cs
@@ -97,7 +97,7 @@ public void ShouldThrowArgumentExceptionForIllegalTableNames(string tableName, s
                         table-name = " + tableName + @" 
                     }").WithFallback(AzurePersistence.DefaultConfig)
                         .GetConfig("akka.persistence.journal.azure-table"));
-            createJournalSettings.ShouldThrow<ArgumentException>(reason);
+            createJournalSettings.Should().Throw<ArgumentException>(reason);
         }
         
         [Theory]
@@ -113,7 +113,7 @@ public void ShouldThrowArgumentExceptionForIllegalContainerNames(string containe
                     }").WithFallback(AzurePersistence.DefaultConfig)
                         .GetConfig("akka.persistence.snapshot-store.azure-blob-store"));
 
-            createSnapshotSettings.ShouldThrow<ArgumentException>(reason);
+            createSnapshotSettings.Should().Throw<ArgumentException>(reason);
         }
     }
 }
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