diff --git a/source/main.ptx b/source/main.ptx
index d69fe92..e1a29ca 100644
--- a/source/main.ptx
+++ b/source/main.ptx
@@ -5,8 +5,8 @@
   <xi:include href="./docinfo.ptx" />
 
   <book xml:id="wdmd">
-    <title>What Do Mathematicians Do?</title>
-    <subtitle>An Overview of Undergraduate Mathematics</subtitle>
+    <title>What Do Mathematicians and Data Scientists Do?</title>
+    <subtitle>Cool stuff</subtitle>
 
     <!-- Include frontmatter -->
     <xi:include href="./frontmatter.ptx" />