diff --git a/MANIFEST.in b/MANIFEST.in
index f6beb6849..85b37fcf3 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,6 +1,6 @@
 include MANIFEST.in
 include COPYING Makefile requirements.txt
-include doc/Makefile doc/*.txt doc/*.1 doc/*.html doc/dosage-completion
+include doc/Makefile doc/*.txt doc/*.1 doc/*.html doc/*.md doc/dosage-completion
 include doc/css/*.css doc/js/*.js
 include scripts/*.py scripts/*.sh scripts/*.bat scripts/*.iss
 recursive-include tests *.py
diff --git a/doc/adding_new_comics.txt b/doc/adding_new_comics.md
similarity index 100%
rename from doc/adding_new_comics.txt
rename to doc/adding_new_comics.md