diff --git a/main.tex b/main.tex
index df75142..86f2766 100644
--- a/main.tex
+++ b/main.tex
@@ -9,7 +9,7 @@
 \include{macros}
 
 \begin{document}
-\title{Backpack: Towards Practical Mix-in Linking in Haskell \\ REVISION 2017--02--27}
+\title{Backpack: Towards Practical Mix-in Linking in Haskell \\ REVISION 2017--02--27b}
 \author{Edward Z. Yang}
 \principaladviser{David Mazi\'eres}
 \firstreader{Derek Dreyer}