diff --git a/mlir/lib/Bindings/Python/PybindUtils.h b/mlir/lib/Bindings/Python/PybindUtils.h
--- a/mlir/lib/Bindings/Python/PybindUtils.h
+++ b/mlir/lib/Bindings/Python/PybindUtils.h
@@ -16,6 +16,14 @@
 #include <pybind11/pybind11.h>
 #include <pybind11/stl.h>
 
+// Allows use of ssize_t
+#if defined(_MSC_VER)
+#include <BaseTsd.h>
+typedef SSIZE_T ssize_t;
+#else
+#include <sys/types.h>
+#endif
+
 namespace mlir {
 namespace python {