diff --git a/doc/thrift.tex b/doc/thrift.tex
index 082be62..d20b737 100644
--- a/doc/thrift.tex
+++ b/doc/thrift.tex
@@ -163,6 +163,7 @@
 \item \texttt{i64} A 64-bit signed integer
 \item \texttt{double} A 64-bit floating point number
 \item \texttt{string} An encoding-agnostic text or binary string
+\item \texttt{binary} A byte array representation for blobs
 \end{itemize}
 
 Of particular note is the absence of unsigned integer types. Because these