diff --git a/include/gsl/span b/include/gsl/span
index fa1404a..7a4b5d0 100644
--- a/include/gsl/span
+++ b/include/gsl/span
@@ -509,9 +509,13 @@ public:
         Expects(CheckRange(idx, storage_.size()));
         return data()[idx];
     }
-
+    
+    // at and operator() are deprecated to align to the public member functions of std::span
+    [[deprecated("Use operator[]")]]
     constexpr reference at(index_type idx) const noexcept{ return this->operator[](idx); }
+    [[deprecated("Use operator[]")]]
     constexpr reference operator()(index_type idx) const noexcept{ return this->operator[](idx); }
+    
     constexpr pointer data() const noexcept { return storage_.data(); }
 
     // [span.iter], span iterator support
diff --git a/tests/span_tests.cpp b/tests/span_tests.cpp
index 7607194..de7455d 100644
--- a/tests/span_tests.cpp
+++ b/tests/span_tests.cpp
@@ -17,8 +17,7 @@
 #ifdef _MSC_VER
 // blanket turn off warnings from CppCoreCheck from catch
 // so people aren't annoyed by them when running the tool.
-#pragma warning(disable : 26440 26426 26497 4189) // from catch
-
+#pragma warning(disable : 26440 26426 26497 4189 4996)
 #endif
 
 #if __clang__ || __GNUC__
@@ -26,6 +25,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wundef"
 #pragma GCC diagnostic ignored "-Wunused-variable"
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #endif // __clang__ || __GNUC__
 
 #if __clang__