diff --git a/EF6.PG/NpgsqlServices.cs b/EF6.PG/NpgsqlServices.cs
index 4108f76..f70e2e0 100644
--- a/EF6.PG/NpgsqlServices.cs
+++ b/EF6.PG/NpgsqlServices.cs
@@ -114,7 +114,7 @@ protected override string GetDbProviderManifestToken([NotNull] DbConnection conn
 
             var serverVersion = "";
             UsingPostgresDbConnection((NpgsqlConnection)connection, conn => {
-                serverVersion = conn.ServerVersion;
+                serverVersion = conn.PostgreSqlVersion.ToString();
             });
             return serverVersion;
         }