diff --git a/src/libxrpl/basics/Number.cpp b/src/libxrpl/basics/Number.cpp
index 58da0a3a66..fc30bf7a74 100644
--- a/src/libxrpl/basics/Number.cpp
+++ b/src/libxrpl/basics/Number.cpp
@@ -63,6 +63,12 @@ public:
     // add a digit
     void
     push(numberuint128 d) noexcept;
+#ifdef _MSC_VER
+    void
+    push(numberint128 d) noexcept;
+    void
+    push(std::int64_t d) noexcept;
+#endif
 
     // recover a digit
     unsigned
@@ -103,6 +109,20 @@ Number::Guard::push(numberuint128 d128) noexcept
     digits_ |= (d & 0x0000'0000'0000'000FULL) << 60;
 }
 
+#ifdef _MSC_VER
+void
+Number::Guard::push(numberint128 d) noexcept
+{
+    push(static_cast<numberuint128>(d));
+}
+
+void
+Number::Guard::push(std::int64_t d) noexcept
+{
+    push(static_cast<numberuint128>(d));
+}
+#endif
+
 inline unsigned
 Number::Guard::pop() noexcept
 {
diff --git a/src/test/basics/Number_test.cpp b/src/test/basics/Number_test.cpp
index b4c03232cb..0c4e042259 100644
--- a/src/test/basics/Number_test.cpp
+++ b/src/test/basics/Number_test.cpp
@@ -745,6 +745,8 @@ public:
         Number maxInt64{std::numeric_limits<std::int64_t>::max()};
         BEAST_EXPECT(maxInt64.exponent() <= 0);
 
+        // TODO: square maxInt64 and square Number::max()
+
         using namespace boost::multiprecision;
         // maxint64          9,223,372,036,854,775,808
         int128_t minMantissa{1'000'000'000'000'000'000LL};