Update the tools before building the docs
diff --git a/Misc/build.sh b/Misc/build.sh
index aad7fe1..de997f5 100755
--- a/Misc/build.sh
+++ b/Misc/build.sh
@@ -229,7 +229,7 @@
     echo "Conflict detected in $CONFLICTED_FILE.  Doc build skipped." > ../build/$F
     err=1
 else
-    make html >& ../build/$F
+    make update html >& ../build/$F
     err=$?
 fi
 update_status "Making doc" "$F" $start