diff --git a/book/source/01-intro.md b/book/source/01-intro.md
index 2ddce83..75b9c3f 100644
--- a/book/source/01-intro.md
+++ b/book/source/01-intro.md
@@ -46,7 +46,7 @@ This document describes OpenPGP concepts at the "library" level of abstraction,
 
 ## Which version of OpenPGP does this address?
 
-The documentation will mainly cover version 6 of OpenPGP, while occasionally noting differences to previous versions that are relevant to application developers.
+The documentation mainly covers version 6 of OpenPGP, while occasionally noting differences to previous versions that are relevant to application developers.
 
 Version 4 of OpenPGP will remain relevant for a number of years;
 some version 3 artifacts are still in use as of this writing.
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