diff --git a/src/gotenberg_client/_base.py b/src/gotenberg_client/_base.py
index 42aa930..3c75d18 100644
--- a/src/gotenberg_client/_base.py
+++ b/src/gotenberg_client/_base.py
@@ -114,6 +114,10 @@ def pdf_format(self, pdf_format: PdfAFormat) -> Self:
         self._form_data.update(pdf_format.to_form())
         return self
 
+    def universal_access_pdf(self, *, pdf_ua: bool) -> Self:
+        self._form_data.update({"pdfua": str(pdf_ua)})
+        return self
+
     def trace(self, trace_id: str) -> Self:
         self._headers["Gotenberg-Trace"] = trace_id
         return self
diff --git a/src/gotenberg_client/options.py b/src/gotenberg_client/options.py
index 4751de7..d2ef4ae 100644
--- a/src/gotenberg_client/options.py
+++ b/src/gotenberg_client/options.py
@@ -18,12 +18,15 @@ class PdfAFormat(enum.Enum):
     A3b = enum.auto()
 
     def to_form(self) -> Dict[str, str]:
+        format_name = None
         if self.value == PdfAFormat.A1a.value:
-            return {"pdfFormat": "PDF/A-1a"}
+            format_name = "PDF/A-1a"
         elif self.value == PdfAFormat.A2b.value:
-            return {"pdfFormat": "PDF/A-2b"}
+            format_name = "PDF/A-2b"
         elif self.value == PdfAFormat.A3b.value:
-            return {"pdfFormat": "PDF/A-3b"}
+            format_name = "PDF/A-3b"
+        if format_name is not None:
+            return {"pdfa": format_name, "pdfFormat": format_name}
         else:  # pragma: no cover
             raise NotImplementedError(self.value)