diff --git a/shell.nix b/shell.nix
index 67b57e8..ce10d00 100644
--- a/shell.nix
+++ b/shell.nix
@@ -9,8 +9,8 @@ let
     texlive.combine { inherit (texlive) scheme-medium bitter titlesec; };
 in pkgs.mkShell {
   buildInputs = with pkgs; [
+    calibre
     dyson
-    kindlegen
     kubectl
     kubectx
     mdbook
diff --git a/src/Tulpanomicon.png b/src/Tulpanomicon.png
new file mode 100644
index 0000000..69c19c6
Binary files /dev/null and b/src/Tulpanomicon.png differ
diff --git a/src/build.sh b/src/build.sh
index b34d25c..9f55af5 100755
--- a/src/build.sh
+++ b/src/build.sh
@@ -104,7 +104,7 @@ set -x
 pandoc -o tulpanomicon.epub --epub-chapter-level=2 --resource-path=. title.md $FILES
 pandoc -o test.tex -s --include-in-header sectionpagebreak.tex --variable=subparagraph --toc --toc-depth=2 --resource-path=. title.md $FILES
 pandoc -o tulpanomicon.pdf --include-in-header sectionpagebreak.tex --variable=subparagraph --toc --toc-depth=2 --pdf-engine xelatex --resource-path=. title.md $FILES || exit
-kindlegen tulpanomicon.epub
+ebook-convert tulpanomicon.epub tulpanomicon.mobi
 mkdir -p ../book
 cp -vrf tulpanomicon.mobi ../book/
 cp -vrf tulpanomicon.epub ../book/
diff --git a/src/title.md b/src/title.md
index 81c45b4..e9c1140 100644
--- a/src/title.md
+++ b/src/title.md
@@ -6,6 +6,7 @@ language: en-US
 creator:
 - role: collector
   text: Within
+cover-image: ./Tulpanomicon.png
 
 # pandoc LaTeX crud
 documentclass: book